ib biology extended essay topics

Extended Essay Writers

Biology EE Topics | 40 Ideas

Luke MacQuoid

There are many potential topics for a biology Extended Essay (EE) in the International Baccalaureate (IB) program.

Topic Ideas

Some possibilities include the following:

• The effects of pollution on a particular species or ecosystem.
• The genetic basis of a specific disease or trait.
• The comparative physiology of a specific mammal and bird.
• The effects of climate change on a particular species or ecosystem.
• The impact of human activity on the evolution of a species.
• The physiology of a specific plant species.
• The efficacy of a specific medicinal plant.
• The comparison of the anatomy and physiology of a specific animal species in captivity and in the wild.
• The impact of a specific invasive species on an ecosystem.
• The effect of different fertilizers on the growth and development of a specific plant species.
• The study of the symbiotic relationship between specific species.
• The effect of different light conditions on the growth and development of a specific plant species.
• The impact of different temperature conditions on the physiology of a specific microorganism.
• The study of the genetic diversity within a specific species.
• The study of the effects of different pH levels on the growth and development of a specific plant species.
• The impact of human activity on the population dynamics of a specific species.
• The study of the effects of different soil types on the growth and development of a specific plant species.
• The study of the impacts of different pesticides on the physiology of a specific species.
• The study of the effects of different water conditions on the growth and development of a specific plant species.
• The study of the impact of ocean acidification on the physiology of a specific marine species.
• Studying the Effects of Acid Rain on Local Flora.
• The Role of Gut Microbiota in Obesity.
• Influence of Insecticides on Honey Bee Population Decline.
• The Effects of Microplastics on Aquatic Food Chains.
• The Role of Genetics in Determining Human Lifespan.
• Influence of Habitat Loss on the Genetic Diversity of a Specific Species.
• The Effects of Light Pollution on Nocturnal Animals.
• A Comparative Study of Photosynthesis Rates in Different Plant Species.
• The Impact of Noise Pollution on Avian Communication.
• Analysis of Biological Controls for Invasive Species.
• The Effects of Diet on the Gut Microbiota.
• Understanding the Effect of Climate Change on Disease Vectors.
• Exploring the Role of Genetics in Athletic Performance.
• Effects of Pharmaceuticals on Aquatic Ecosystems.
• The Impact of Urbanization on Local Bird Species.
• Understanding the Relationship Between Sleep and Immune Function.
• Studying the Effects of Air Pollution on Lichen Species.
• The Role of Epigenetics in Aging.
• The Effect of Vegan and Vegetarian Diets on the Human Body.
• Investigating the Biological Mechanisms of Meditation and Mindfulness.

It’s important to note that these are just examples of topics for your IB EE in Biology . You should choose a topic that interests you and that you can find enough information on.

Need help with your Biology extended essay?

From research and analysis to structuring and editing, our skilled mentors will be by your side, helping you craft an exceptional extended essay that not only meets the stringent IB criteria but also reflects your passion for Biology studies.

Additionally, it’s essential to consult with your supervisor to make sure the topic meets the requirements of the Extended Essay and that you have access to the necessary resources to complete the research.

Students can use these themes in their essays by researching and analyzing the specific topic, providing evidence and examples to support their claims, and discussing the implications and potential solutions to the issue at hand.

For example, in an essay on the effects of pollution on a particular species or ecosystem, a student could research the specific pollutants that are affecting the species or ecosystem, analyze the effects those pollutants are having, and discuss potential solutions to mitigate the pollution and its effects.

These are experiments students can use for Biology EE topics:

• Looking at how pollution impacts a certain type of animal or plant: This would involve checking out pollution levels in a specific place, then watching to see how it affects your chosen species.
• Understanding how certain genes affect a disease or characteristic: This would mean doing genetic tests to identify the genes involved, and potentially using genetic engineering techniques to change those genes and see what happens.
• Comparing how a mammal and a bird work: You’d do experiments to see how your chosen mammal and bird are similar or different. You could look at things like brain structure, behaviour, and thinking abilities.
• Exploring how climate change impacts a certain animal, plant, or ecosystem: This could involve experiments to see how changes in temperature, rain patterns, or CO2 levels affect your chosen species or ecosystem.
• Studying how people’s actions affect how a species evolves: This might mean looking at how things like habitat destruction, hunting, or pollution impact a species’ genetic diversity and population.
• Looking at how a certain plant works: You’d do experiments to see how the plant responds to things like light, temperature, or water.
• Studying how well a medicinal plant works: You’d do experiments to see how good the plant is at killing or slowing the growth of microbes, or reducing pain or inflammation.
• Comparing a certain animal in captivity and in the wild: You’d look at how being in captivity affects the animal’s body and how it works, and how it behaves.
• Seeing how an invasive species affects an ecosystem: You’d study how your chosen invasive species impacts the growth, reproduction, and health of native species.
• Studying how different fertilizers affect a plant: This could involve testing different types of fertilizers to see how they affect the plant’s growth rate, leaf size, and health.
• Looking at how certain species interact: You’d do experiments to understand the relationship between the species. This could involve seeing what happens when you remove one species, or how different environments affect the relationship.
• Studying how light affects a plant: This might mean doing experiments to see how different light conditions affect the plant’s growth, leaf size, and health.
• Looking at how temperature affects a microorganism: You’d do experiments to see how different temperatures impact the microorganism’s growth rate, metabolism, and health.
• Studying genetic diversity in a species: This could involve using genetic markers to identify genetic variations in the species, and then seeing how these variations affect the organism.
• Looking at how pH levels affect a plant: You’d do experiments to see how different pH levels impact the plant’s growth, leaf size, and health.
• Studying how people’s actions affect a species’ population: This might mean looking at how things like habitat destruction, hunting, or pollution impact the species’ population size, growth rate, and health.
• Looking at how soil types affect a plant: This could involve doing experiments to see how different types of soil affect the plant’s growth, leaf size, and health.
• Studying how pesticides affect a species: This might mean doing experiments to see how different pesticides impact the species’ growth, reproduction, and health.
• Looking at how water conditions affect a plant: You’d do experiments to see how different water conditions (like availability, salt levels, or temperature) affect the plant’s growth, leaf size, and health.
• Studying how ocean acidification affects a marine species: This could involve doing experiments to see how increasing acidity levels impact the species’ growth, reproduction, and health.

Additionally, in an essay on the comparative psychiatry of a specific mammal and bird, a student could research and compare the brain structures, behaviors, and cognitive abilities of the two species and discuss any similarities and differences found.

A student can ask for help from a writing service if they need assistance with their essay. This can bring several benefits to the student, such as:

• Professional guidance . Writing services often have experienced writers and editors who can provide guidance on the essay topic and structure, as well as help with research and editing.
• Improved quality . A writing service can help improve the overall quality of the essay, including grammar, punctuation, and formatting.
• Better grades . With the help of a writing service, a student’s essay is likely to be of higher quality, which can lead to better grades.
• Time-saving . A writing service can help save time as the student can focus on other responsibilities while the writing service works on the essay.
• Customization . Writing services can also provide a customized service that can be tailored to the student’s specific needs and requirements.
• Originality . Professional writers will provide original work that is free from plagiarism, which is important in academic writing.

It is important to note, however, that a student should always ensure that the writing service they use is reputable and that they review and understand the work they receive before submitting it as their own.

Luke MacQuoid has extensive experience teaching English as a foreign language in Japan, having worked with students of all ages for over 12 years. Currently, he is teaching at the tertiary level. Luke holds a BA from the University of Sussex and an MA in TESOL from Lancaster University, both located in England. As well to his work as an IB Examiner and Master Tutor, Luke also enjoys sharing his experiences and insights with others through writing articles for various websites, including extendedessaywriters.com blog

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International Baccalaureate (IB)

IB students around the globe fear writing the Extended Essay, but it doesn't have to be a source of stress! In this article, I'll get you excited about writing your Extended Essay and provide you with the resources you need to get an A on it.

If you're reading this article, I'm going to assume you're an IB student getting ready to write your Extended Essay. If you're looking at this as a potential future IB student, I recommend reading our introductory IB articles first, including our guide to what the IB program is and our full coverage of the IB curriculum .

IB Extended Essay: Why Should You Trust My Advice?

I myself am a recipient of an IB Diploma, and I happened to receive an A on my IB Extended Essay. Don't believe me? The proof is in the IBO pudding:

If you're confused by what this report means, EE is short for Extended Essay , and English A1 is the subject that my Extended Essay topic coordinated with. In layman's terms, my IB Diploma was graded in May 2010, I wrote my Extended Essay in the English A1 category, and I received an A grade on it.

What Is the Extended Essay in the IB Diploma Programme?

The IB Extended Essay, or EE , is a mini-thesis you write under the supervision of an IB advisor (an IB teacher at your school), which counts toward your IB Diploma (learn more about the major IB Diploma requirements in our guide) . I will explain exactly how the EE affects your Diploma later in this article.

For the Extended Essay, you will choose a research question as a topic, conduct the research independently, then write an essay on your findings . The essay itself is a long one—although there's a cap of 4,000 words, most successful essays get very close to this limit.

Keep in mind that the IB requires this essay to be a "formal piece of academic writing," meaning you'll have to do outside research and cite additional sources.

The IB Extended Essay must include the following:

• A title page
• Contents page
• Introduction
• Body of the essay
• References and bibliography

Additionally, your research topic must fall into one of the six approved DP categories , or IB subject groups, which are as follows:

• Group 1: Studies in Language and Literature
• Group 2: Language Acquisition
• Group 3: Individuals and Societies
• Group 4: Sciences
• Group 5: Mathematics
• Group 6: The Arts

Once you figure out your category and have identified a potential research topic, it's time to pick your advisor, who is normally an IB teacher at your school (though you can also find one online ). This person will help direct your research, and they'll conduct the reflection sessions you'll have to do as part of your Extended Essay.

As of 2018, the IB requires a "reflection process" as part of your EE supervision process. To fulfill this requirement, you have to meet at least three times with your supervisor in what the IB calls "reflection sessions." These meetings are not only mandatory but are also part of the formal assessment of the EE and your research methods.

According to the IB, the purpose of these meetings is to "provide an opportunity for students to reflect on their engagement with the research process." Basically, these meetings give your supervisor the opportunity to offer feedback, push you to think differently, and encourage you to evaluate your research process.

The final reflection session is called the viva voce, and it's a short 10- to 15-minute interview between you and your advisor. This happens at the very end of the EE process, and it's designed to help your advisor write their report, which factors into your EE grade.

Here are the topics covered in your viva voce :

• A check on plagiarism and malpractice
• Your reflection on your project's successes and difficulties
• Your reflection on what you've learned during the EE process

Your completed Extended Essay, along with your supervisor's report, will then be sent to the IB to be graded. We'll cover the assessment criteria in just a moment.

We'll help you learn how to have those "lightbulb" moments...even on test day!  

What Should You Write About in Your IB Extended Essay?

You can technically write about anything, so long as it falls within one of the approved categories listed above.

It's best to choose a topic that matches one of the IB courses , (such as Theatre, Film, Spanish, French, Math, Biology, etc.), which shouldn't be difficult because there are so many class subjects.

Here is a range of sample topics with the attached extended essay:

• Biology: The Effect of Age and Gender on the Photoreceptor Cells in the Human Retina
• Chemistry: How Does Reflux Time Affect the Yield and Purity of Ethyl Aminobenzoate (Benzocaine), and How Effective is Recrystallisation as a Purification Technique for This Compound?
• English: An Exploration of Jane Austen's Use of the Outdoors in Emma
• Geography: The Effect of Location on the Educational Attainment of Indigenous Secondary Students in Queensland, Australia
• Math: Alhazen's Billiard Problem
• Visual Arts: Can Luc Tuymans Be Classified as a Political Painter?

You can see from how varied the topics are that you have a lot of freedom when it comes to picking a topic . So how do you pick when the options are limitless?

How to Write a Stellar IB Extended Essay: 6 Essential Tips

Below are six key tips to keep in mind as you work on your Extended Essay for the IB DP. Follow these and you're sure to get an A!

#1: Write About Something You Enjoy

You can't expect to write a compelling essay if you're not a fan of the topic on which you're writing. For example, I just love British theatre and ended up writing my Extended Essay on a revolution in post-WWII British theatre. (Yes, I'm definitely a #TheatreNerd.)

I really encourage anyone who pursues an IB Diploma to take the Extended Essay seriously. I was fortunate enough to receive a full-tuition merit scholarship to USC's School of Dramatic Arts program. In my interview for the scholarship, I spoke passionately about my Extended Essay; thus, I genuinely think my Extended Essay helped me get my scholarship.

But how do you find a topic you're passionate about? Start by thinking about which classes you enjoy the most and why . Do you like math classes because you like to solve problems? Or do you enjoy English because you like to analyze literary texts?

Keep in mind that there's no right or wrong answer when it comes to choosing your Extended Essay topic. You're not more likely to get high marks because you're writing about science, just like you're not doomed to failure because you've chosen to tackle the social sciences. The quality of what you produce—not the field you choose to research within—will determine your grade.

Once you've figured out your category, you should brainstorm more specific topics by putting pen to paper . What was your favorite chapter you learned in that class? Was it astrophysics or mechanics? What did you like about that specific chapter? Is there something you want to learn more about? I recommend spending a few hours on this type of brainstorming.

One last note: if you're truly stumped on what to research, pick a topic that will help you in your future major or career . That way you can use your Extended Essay as a talking point in your college essays (and it will prepare you for your studies to come too!).

#2: Select a Topic That Is Neither Too Broad nor Too Narrow

There's a fine line between broad and narrow. You need to write about something specific, but not so specific that you can't write 4,000 words on it.

You can't write about WWII because that would be a book's worth of material. You also don't want to write about what type of soup prisoners of war received behind enemy lines, because you probably won’t be able to come up with 4,000 words of material about it. However, you could possibly write about how the conditions in German POW camps—and the rations provided—were directly affected by the Nazis' successes and failures on the front, including the use of captured factories and prison labor in Eastern Europe to increase production. WWII military history might be a little overdone, but you get my point.

If you're really stuck trying to pinpoint a not-too-broad-or-too-narrow topic, I suggest trying to brainstorm a topic that uses a comparison. Once you begin looking through the list of sample essays below, you'll notice that many use comparisons to formulate their main arguments.

I also used a comparison in my EE, contrasting Harold Pinter's Party Time with John Osborne's Look Back in Anger in order to show a transition in British theatre. Topics with comparisons of two to three plays, books, and so on tend to be the sweet spot. You can analyze each item and then compare them with one another after doing some in-depth analysis of each individually. The ways these items compare and contrast will end up forming the thesis of your essay!

When choosing a comparative topic, the key is that the comparison should be significant. I compared two plays to illustrate the transition in British theatre, but you could compare the ways different regional dialects affect people's job prospects or how different temperatures may or may not affect the mating patterns of lightning bugs. The point here is that comparisons not only help you limit your topic, but they also help you build your argument.

Comparisons are not the only way to get a grade-A EE, though. If after brainstorming, you pick a non-comparison-based topic and are still unsure whether your topic is too broad or narrow, spend about 30 minutes doing some basic research and see how much material is out there.

If there are more than 1,000 books, articles, or documentaries out there on that exact topic, it may be too broad. But if there are only two books that have any connection to your topic, it may be too narrow. If you're still unsure, ask your advisor—it's what they're there for! Speaking of advisors...

Don't get stuck with a narrow topic!

#3: Choose an Advisor Who Is Familiar With Your Topic

If you're not certain of who you would like to be your advisor, create a list of your top three choices. Next, write down the pros and cons of each possibility (I know this sounds tedious, but it really helps!).

For example, Mr. Green is my favorite teacher and we get along really well, but he teaches English. For my EE, I want to conduct an experiment that compares the efficiency of American electric cars with foreign electric cars.

I had Ms. White a year ago. She teaches physics and enjoyed having me in her class. Unlike Mr. Green, Ms. White could help me design my experiment.

Based on my topic and what I need from my advisor, Ms. White would be a better fit for me than would Mr. Green (even though I like him a lot).

The moral of my story is this: do not just ask your favorite teacher to be your advisor . They might be a hindrance to you if they teach another subject. For example, I would not recommend asking your biology teacher to guide you in writing an English literature-based EE.

There can, of course, be exceptions to this rule. If you have a teacher who's passionate and knowledgeable about your topic (as my English teacher was about my theatre topic), you could ask that instructor. Consider all your options before you do this. There was no theatre teacher at my high school, so I couldn't find a theatre-specific advisor, but I chose the next best thing.

Before you approach a teacher to serve as your advisor, check with your high school to see what requirements they have for this process. Some IB high schools require your IB Extended Essay advisor to sign an Agreement Form , for instance.

Make sure that you ask your IB coordinator whether there is any required paperwork to fill out. If your school needs a specific form signed, bring it with you when you ask your teacher to be your EE advisor.

#4: Pick an Advisor Who Will Push You to Be Your Best

Some teachers might just take on students because they have to and aren't very passionate about reading drafts, only giving you minimal feedback. Choose a teacher who will take the time to read several drafts of your essay and give you extensive notes. I would not have gotten my A without being pushed to make my Extended Essay draft better.

Ask a teacher that you have experience with through class or an extracurricular activity. Do not ask a teacher that you have absolutely no connection to. If a teacher already knows you, that means they already know your strengths and weaknesses, so they know what to look for, where you need to improve, and how to encourage your best work.

Also, don't forget that your supervisor's assessment is part of your overall EE score . If you're meeting with someone who pushes you to do better—and you actually take their advice—they'll have more impressive things to say about you than a supervisor who doesn't know you well and isn't heavily involved in your research process.

Be aware that the IB only allows advisors to make suggestions and give constructive criticism. Your teacher cannot actually help you write your EE. The IB recommends that the supervisor spends approximately two to three hours in total with the candidate discussing the EE.

#5: Make Sure Your Essay Has a Clear Structure and Flow

The IB likes structure. Your EE needs a clear introduction (which should be one to two double-spaced pages), research question/focus (i.e., what you're investigating), a body, and a conclusion (about one double-spaced page). An essay with unclear organization will be graded poorly.

The body of your EE should make up the bulk of the essay. It should be about eight to 18 pages long (again, depending on your topic). Your body can be split into multiple parts. For example, if you were doing a comparison, you might have one third of your body as Novel A Analysis, another third as Novel B Analysis, and the final third as your comparison of Novels A and B.

If you're conducting an experiment or analyzing data, such as in this EE , your EE body should have a clear structure that aligns with the scientific method ; you should state the research question, discuss your method, present the data, analyze the data, explain any uncertainties, and draw a conclusion and/or evaluate the success of the experiment.

#6: Start Writing Sooner Rather Than Later!

You will not be able to crank out a 4,000-word essay in just a week and get an A on it. You'll be reading many, many articles (and, depending on your topic, possibly books and plays as well!). As such, it's imperative that you start your research as soon as possible.

Each school has a slightly different deadline for the Extended Essay. Some schools want them as soon as November of your senior year; others will take them as late as February. Your school will tell you what your deadline is. If they haven't mentioned it by February of your junior year, ask your IB coordinator about it.

Some high schools will provide you with a timeline of when you need to come up with a topic, when you need to meet with your advisor, and when certain drafts are due. Not all schools do this. Ask your IB coordinator if you are unsure whether you are on a specific timeline.

Below is my recommended EE timeline. While it's earlier than most schools, it'll save you a ton of heartache (trust me, I remember how hard this process was!):

• January/February of Junior Year: Come up with your final research topic (or at least your top three options).
• February of Junior Year: Approach a teacher about being your EE advisor. If they decline, keep asking others until you find one. See my notes above on how to pick an EE advisor.
• April/May of Junior Year: Submit an outline of your EE and a bibliography of potential research sources (I recommend at least seven to 10) to your EE advisor. Meet with your EE advisor to discuss your outline.
• Summer Between Junior and Senior Year: Complete your first full draft over the summer between your junior and senior year. I know, I know—no one wants to work during the summer, but trust me—this will save you so much stress come fall when you are busy with college applications and other internal assessments for your IB classes. You will want to have this first full draft done because you will want to complete a couple of draft cycles as you likely won't be able to get everything you want to say into 4,000 articulate words on the first attempt. Try to get this first draft into the best possible shape so you don't have to work on too many revisions during the school year on top of your homework, college applications, and extracurriculars.
• August/September of Senior Year: Turn in your first draft of your EE to your advisor and receive feedback. Work on incorporating their feedback into your essay. If they have a lot of suggestions for improvement, ask if they will read one more draft before the final draft.
• September/October of Senior Year: Submit the second draft of your EE to your advisor (if necessary) and look at their feedback. Work on creating the best possible final draft.
• November-February of Senior Year: Schedule your viva voce. Submit two copies of your final draft to your school to be sent off to the IB. You likely will not get your grade until after you graduate.

Remember that in the middle of these milestones, you'll need to schedule two other reflection sessions with your advisor . (Your teachers will actually take notes on these sessions on a form like this one , which then gets submitted to the IB.)

I recommend doing them when you get feedback on your drafts, but these meetings will ultimately be up to your supervisor. Just don't forget to do them!

The early bird DOES get the worm!

How Is the IB Extended Essay Graded?

Extended Essays are graded by examiners appointed by the IB on a scale of 0 to 34 . You'll be graded on five criteria, each with its own set of points. You can learn more about how EE scoring works by reading the IB guide to extended essays .

• Criterion A: Focus and Method (6 points maximum)
• Criterion B: Knowledge and Understanding (6 points maximum)
• Criterion C: Critical Thinking (12 points maximum)
• Criterion D: Presentation (4 points maximum)
• Criterion E: Engagement (6 points maximum)

How well you do on each of these criteria will determine the final letter grade you get for your EE. You must earn at least a D to be eligible to receive your IB Diploma.

Although each criterion has a point value, the IB explicitly states that graders are not converting point totals into grades; instead, they're using qualitative grade descriptors to determine the final grade of your Extended Essay . Grade descriptors are on pages 102-103 of this document .

Here's a rough estimate of how these different point values translate to letter grades based on previous scoring methods for the EE. This is just an estimate —you should read and understand the grade descriptors so you know exactly what the scorers are looking for.

Here is the breakdown of EE scores (from the May 2021 bulletin):

How Does the Extended Essay Grade Affect Your IB Diploma?

The Extended Essay grade is combined with your TOK (Theory of Knowledge) grade to determine how many points you get toward your IB Diploma.

To learn about Theory of Knowledge or how many points you need to receive an IB Diploma, read our complete guide to the IB program and our guide to the IB Diploma requirements .

This diagram shows how the two scores are combined to determine how many points you receive for your IB diploma (3 being the most, 0 being the least). In order to get your IB Diploma, you have to earn 24 points across both categories (the TOK and EE). The highest score anyone can earn is 45 points.

Let's say you get an A on your EE and a B on TOK. You will get 3 points toward your Diploma. As of 2014, a student who scores an E on either the extended essay or TOK essay will not be eligible to receive an IB Diploma .

Prior to the class of 2010, a Diploma candidate could receive a failing grade in either the Extended Essay or Theory of Knowledge and still be awarded a Diploma, but this is no longer true.

Figuring out how you're assessed can be a little tricky. Luckily, the IB breaks everything down here in this document . (The assessment information begins on page 219.)

40+ Sample Extended Essays for the IB Diploma Programme

In case you want a little more guidance on how to get an A on your EE, here are over 40 excellent (grade A) sample extended essays for your reading pleasure. Essays are grouped by IB subject.

• Business Management 1
• Chemistry 1
• Chemistry 2
• Chemistry 3
• Chemistry 4
• Chemistry 5
• Chemistry 6
• Chemistry 7
• Computer Science 1
• Economics 1
• Design Technology 1
• Design Technology 2
• Environmental Systems and Societies 1
• Geography 1
• Geography 2
• Geography 3
• Geography 4
• Geography 5
• Geography 6
• Literature and Performance 1
• Mathematics 1
• Mathematics 2
• Mathematics 3
• Mathematics 4
• Mathematics 5
• Philosophy 1
• Philosophy 2
• Philosophy 3
• Philosophy 4
• Philosophy 5
• Psychology 1
• Psychology 2
• Psychology 3
• Psychology 4
• Psychology 5
• Social and Cultural Anthropology 1
• Social and Cultural Anthropology 2
• Social and Cultural Anthropology 3
• Sports, Exercise and Health Science 1
• Sports, Exercise and Health Science 2
• Visual Arts 1
• Visual Arts 2
• Visual Arts 3
• Visual Arts 4
• Visual Arts 5
• World Religion 1
• World Religion 2
• World Religion 3

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100 IB Extended Essay Topic Ideas!

One of the biggest keys to the Extended Essay is choosing which subject you want to write your work in and developing that crucial research question. Read on to find inspiration for topics across a wide range of subjects.

Extended Essay: The Love/Hate aspect of the IB

One of the biggest keys to the Extended Essay is choosing which subject you want to write your work in and developing that crucial research question. Annoyingly, coming up with that idea and research question can be the toughest part of the entire process. Writing 4,000 words about something you are interested in is a big ask and it often feels impossible to narrow down your thoughts. To make everything super clear, here are 100 Extended Essay Topics for you to draw inspiration from! Use these as a springboard to create your own research question !

Get Support from A Top Tutor Today

At Lanterna we have over 300 tutors who smashed their Extended Essay. They know exactly how to get an A in your EE and can give you tips and tricks on how you can do the same. What are you waiting for? Get your own tutor today !

How to Begin Your IB Extended Essay

To make everything super clear, here are 100 Extended Essay Topics for you to draw inspiration from! Use these as a springboard to  create your own research question !

Get Support from a Top Tutor Today

At Lanterna, we have over 300 tutors who smashed their Extended Essay. They know exactly how to get an A in your EE and can give you tips and tricks on how you can do the same. What are you waiting for? Get your own tutor today!

10 Steps to Writing an Extended Essay

Before we look at specific topics for your essay, let’s recap the 10-steps you’ll need to follow to complete your extended essay.

1. Define the Topic and Draft the Research Question

2. Create a Timeline

3. Identify and gather Sources

4. Set Deadlines

5. Plan the structure according to the total word count

6. Evaluate

7. independent Research

8. Write the extended essay draft

10. Present

By following the steps above, you should be able to produce a logical and coherent rationale to follow when writing the extended essay for your IB diploma programme.

By starting with a solid research question, you’ll be able to put an extended essay of global significance together, from the research and writing process all the way through to your final submission with a favourable extended essay grade.

Below, we’re sharing 10 topics across 10 subjects to inspire your next IB extended essay.

1. How the change of habitat affects an X organism?

2. How does climate affect the growth of X plant?

3. Can photosynthesis take place without sunlight?

4. What is the effect of age and gender on the photoreceptor cells in the human retina?

5. How is climate change impacting the appearance of coral reefs?

6. An evaluation of how  antioxidants  work in our bodies?

7. Does hand sanitizer, hand soap or antibacterial wipes have the greatest ability to inhibit the growth of E. Coli?

8. To what extent do live cultures in yogurts/milk/other dairy products reduce the concentration of lactose present over the course of a 2 hour incubation period at x°C?

9. What is the relationship between  population density  between X and population size of X?

10. What is the relationship between indoleacetic acid, a growth hormone, and the growth of X (a crop)?

11. How does human influence impact an aquatic ecosystem?

12. How can one organize a pollution check along a X canal in X?

13. What is the effect of the increased ecological footprint in the  Amazon ?

14. What are the forest and woodland restoration in Siberia, Russia and which one is most effective?

15. How does human interference cause ecological imbalances in an X city/country/continent?

16. What is the impact of urban development on the  bee population  in X city?

17. What are the differences in the conversation efforts in Yosemite National Park (California, USA) and the Lake District National Park (UK)?

18. To what extent have healthcare policies in X country influenced their human population curve?

19. How have changes in environmental systems influenced the value system of X country?

20. How has X landfill site affected the surrounding terrestrial ecosystem?

21. What is the profitability of  airline companies ?

22. How does unemployment affect the market?

23. Why did X recession occur?

24. How did the financial Policy affect the economy in X?

25. How effective are government policies in reducing overconsumption of alcohol (specifically hard liquor)?

26. To what extent are public buses and subways substitute goods in a country?

27. How did the tax reform in country x affect its growth and development? (many countries to choose from)

28. To what extent was weak government policy responsible for the Latin American financial crisis of 1997?

29. How effective is the  Big Mac Index  in measuring purchasing power parity?

30. To what extent would the UK suffer from leaving the European Customs Union if Brexit happens?

31. Is there an association between viewing violence on television and the display of violent acts?

32. What motivational climate should a coach employ in order to achieve optimal performance in athletes?

33. How does  X hormone affect human behavior ?

34. Compare theories explaining altruism in human behaviour

35. Discuss short-term and long-term consequences of exposure to violence

36. Why do relationships change or end?

37. Discuss how  social variables (poverty, parenting, educational environment) may the affect cognitive environment.

38. To what extent do mirror neurons play a role in empathy? (2014)

39. To what extent does Mindfulness help people cope with General Anxiety Disorder (GAD)?

40. To what extent is drug therapy effective in the treatment of bipolar disorder?

41. Does the British Parliamentary reforms act of 1832 deserve its title as the great reform act?

42. To what extent are there similarities in Hitler and Mussolini’s Rise to Power?

43. To what extent did Mao’s tackle the problems which he faced?

44. Was Tsar Alexander II of Russia reforms a success or failure?

45. To what extent was the bombing of Dresden in 1945 justifiable?

46. To what extent can  Sweden be considered neutral during WWII ?

47. The impact of structural economic weakness on the collapse of the Soviet Union.

48. How were women treated differently in 1920s and 1950s Great Britain?

49. Why did Israel win the  Six Day War  of 1967?

50. What role did economics play in the unification of Germany from 1834 to 1871?

English Literature

51. What are the Compare and Contrast Jane Austen Books?

52. How does Joseph Conrad’s portray Racism in A Heart of Darkness?

53. How does Arthur Miller’s Death of a Salesman critique today’s capitalist society? The American Dream?

54. To what extent does Chris McCandless in Jon Krakauer’s Into the Wild escape familial influence?

55. What are the similarities and differences between J.K. Rowling’s characterization of Severus Snape in Harry Potter and the Philosopher’s Stone and Harry Potter and the Deathly Hallows?

56. How does Yaa Gyasi use structure in her novel Homegoing to portray the evolution of time?

57. What is the impact of the social context on Holden Caufield and Huckleberry Finn?

58. How does Sylvia Path’s use of Inanimate objects in Bell Jar?

59. How is the empowerment of Feminine portrayed in the Lord of the Rings?

60. Compare the political rhetoric as used in the inaugural addresses of George W. Bush, Barack Obama, and Donald Trump.

61. The design, construction and calibration of an apparatus for measuring lipid concentration in milk.

62. What is the effect of a change in the optimal lift on the horizontal gliding distance of an aircraft?

63. How does the sugar concentration affect the refractive index of water?

64. How does temperature affect the viscosity of X juice/soda?

65. Is the relationship between temperature and conductivity and insulators and conductors?

66. What is the Oberth Effect?

67. What is the temperature dependence of work performed on an AA battery?

68. How can the rotational frequency of a fan driven by a flame measure distance?

69. Do wine bottles of different shapes behave as Helmholtz resonators?

70. How does the diameter of a wheel affect stability in different weather conditions?

71. What factors influence the location of industries in country/city X?

72. An investigation into the significance of preserving the quality of water in a continent/country/city?

73. An investigation into the degree to which City X can be considered a Sustainable City/Community.

74. To what extent is Biodiversity being managed successfully in city X?

75. To what extent does the education and employment of women affect Country x’s fertility rate?

76. To what extent do gender, educational attainment, and working parameters influence obesity risk?

77. To what extent has urban development affected human thermal comfort levels in Country/city x (a country/city that has developed in a rapid rate over the past decades)?

78. To what extent is the Company x corporate waste management program effective, demonstrating environmental sustainability?

79. To what extent is biodiversity being managed successfully at National Park X?

80. What types of urban design encourage high rates of vandalism in X neighbourhoods?

81. The kinetics of Enzymatic Reactions.

82. How do Iron Intake Diets differ in X country?

83. What are the different factors that affect the iodine values in cooking oils?

84. What is the effect of standing time and temperate on the acid content in X juice or soda?

85. Can caffeine in tea or coffee be reduced?

86. What is the effect of temperature on the souring of milk?

87. What are the sources of error in calorimetry?

88. Does brushing your teeth affect the pH in your mouth after eating?

89. How does changing the concentration of the reagents affect the formation and spacing between Liesehang rings in the reaction between X chloride and X when conducted in a test tube?

90. What effect does the coating of aspirin tablets have on the hydrolysis of aspirin?

Social and Cultural Anthropology

91. How clothing relates to the cultural anthropology of X culture.

92. The extent to which social media networks affect different societies.

93. The relationship between ritual, myths and faith in an X society.

94. The history of rituals in X culture.

95. How different marriage rituals inform the cultural anthropology of X culture.

96. Climate change and its impact on the evolution of different creatures on the planet.

97. Understanding the social and cultural anthropology of the supernatural in X culture.

98. An analysis of body modification in relation to social and cultural anthropology.

100. Chaste systems and social ranks in societies.

There are so many class subjects that can form the basis of your extended essay, including these popular six subjects:

– Information technology

– Computer science

– Health science

– World studies

– Visual arts

– Business management

Extended essays are a great way to improve your writing skills in academic writing. Essays of a high standard that demonstrate critical thinking and in depth analysis can be submitted to academic journals. These have the potential to reach the global society.

Start Writing Your Extended Essay Topic

We hope this gave you some great inspiration for the variation of topics available for your Extended Essay . The research question you select is what will carry you through the entire process, so be sure to choose wisely!

Remember, if you are looking for more help with your Extended Essay, make sure to check out our guide which will tell you exactly how to plan, structure, research and write your Extended Essay!

Grab Free Extended Essay Resources!

No matter the subject groups in your diploma program, we’re here to help all of our IB students. Whether you’re writing about social and cultural anthropology, business management, design technology, or scientific methods for your IB diploma, Lanterna has you covered.

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Biology Extended Essay Topics and RQs for IBDP

Table of contents

• Writing Metier

It’s time for our exploration of Biology extended essay topics, a resource designed to spark your curiosity and guide your research interests in the vast and vibrant field of biology. 

Whether you’re fascinated by the intricate workings of ecosystems or intrigued by the complexities of cellular processes, this article offers a diverse range of topics collected by expert academic writers to suit your interests. 

NB! If you need assistance with your Biology assignments, you can use our biology essay writing service , which will surely assist you. Now, let’s get back to the main question of the article – BIO EE topic ideas.

Bio EE topic categories

List of biology extended essay topic categories I’ll cover in this article.

• Impact of Urban Development on Local Ecosystems – Investigating the effects of urban expansion on biodiversity in a specific area.
• Marine Biology and Ocean Acidification – Studying the impact of changing pH levels on marine life.
• Invasive Species and Their Impact on Biodiversity – Analyzing how a particular invasive species has affected native wildlife.
• Conservation Efforts for Endangered Species – Evaluating the effectiveness of current conservation strategies for a specific endangered species.
• Climate Change and Its Effects on Ecosystems – Researching how a particular ecosystem has been impacted by climate change.
• Nutrition and Diet’s Impact on Human Health – Exploring the effects of a specific diet on human health.
• Exercise Physiology – Investigating how different types of exercise affect a particular aspect of human health.
• Neurobiology of Sleep – Studying the effects of sleep patterns on cognitive functions.
• Genetic Factors in Diseases – Exploring the role of genetics in the susceptibility to a specific disease.
• Impact of Environmental Factors on Allergies – Analyzing how environmental changes have influenced the prevalence of allergies.
• Gene Expression in Cancer Cells – Investigating how gene expression differs in cancerous versus normal cells.
• Protein Synthesis and Its Regulation – Studying the regulation of protein synthesis in a specific organism or cell type.
• Stem Cell Research and Regenerative Medicine – Exploring the potential of stem cells in treating a specific condition.
• Viral Replication and Host Interaction – Examining how a particular virus replicates and interacts with its host.
• DNA Repair Mechanisms – Investigating the efficacy of different DNA repair mechanisms under various conditions.
• Photosynthesis Variations Among Plant Species – Comparing photosynthetic efficiency in different plant species.
• Impact of Climate Change on Plant Growth – Studying how changing climates affect the growth of a specific plant species.
• Medicinal Properties of Plants – Investigating the medicinal properties of a specific plant.
• Plant Defense Mechanisms Against Pathogens – Exploring how a particular plant species defends itself against pathogens.
• Genetic Modification and Crop Improvement – Analyzing the impacts of genetic modification on a specific crop’s traits.
• Social Behavior in Insects – Studying the social structures and behaviors of a specific insect species.
• Bird Migration Patterns – Investigating the factors influencing migration patterns of a specific bird species.
• Physiological Adaptations in Marine Mammals – Exploring adaptations that enable marine mammals to survive in their environments.
• Impact of Environmental Stressors on Animal Behavior – Analyzing how specific stressors affect the behavior of a particular animal species.
• Endocrine Regulation in Animals – Studying how the endocrine system regulates processes in a specific animal.
• Antibiotic Resistance in Bacteria – Investigating the mechanisms of antibiotic resistance in a specific bacterial strain.
• Use of Microorganisms in Bioremediation – Exploring the use of microorganisms in cleaning up environmental pollutants.
• Genetic Engineering and Its Applications – Analyzing the applications and implications of genetic engineering in a specific field.
• Role of Microbiome in Human Health – Studying how the human microbiome influences health and disease.
• Yeast Fermentation and Its Industrial Applications – Investigating the fermentation process in yeast and its uses in industry.
• Evolutionary Adaptations to Environmental Changes – Exploring how a particular species has adapted to environmental changes over time.
• Genetic Diversity and Population Health – Studying the impact of genetic diversity on the health of a specific population.
• Molecular Basis of Inheritance – Investigating the molecular mechanisms of inheritance in a specific organism.
• Speciation and Genetic Drift – Analyzing the role of genetic drift in the speciation process.
• Human Evolutionary Biology – Studying aspects of human evolution, such as the development of specific traits.

Every category and its subcategories provide a comprehensive overview, from the microscopic wonders of microbiology to the grand scale of evolutionary biology. 

With the help of our IB writers team, I have managed to collect all these ideas for you, so I hope you will be enjoying this. I aim to inspire your investigative spirit and help you select a topic that  satisfies the IB criteria  and aligns with your passion for biology. 

IB Bio extended essay topics

So, let’s begin with a list of IB Biology EE topics list.

Ecology and Environmental Science

I’m stoked to talk about Ecology and Environmental Science . It’s all about how living things interact with each other and their surroundings. Think of it like a complex dance of life, where every move affects the whole scene. 

From the hustle and bustle of city ecosystems to the quiet, yet dynamic, world of marine biology, we’ll explore how these interactions shape our planet. We’ll also explore the hot topics of invasive species and their impacts, the heroic efforts in conservation, and the big elephant in the room – climate change. 

So, let’s get ready to explore the intricate tapestry of life that makes our world fascinating!

Impact of Urban Development on Local Ecosystems

• Research Question: How does the presence of urban green spaces affect bird species diversity in [City Name]?
• Research Question: What impact do urban heat islands have on the behavior and distribution of [Specific Animal Species] in [City Name]?

Marine Biology and Ocean Acidification

• Research Question: How does ocean acidification affect coral bleaching events in the [Specific Coral Reef Location]?
• Research Question: What is the impact of increasing ocean acidification on the shell growth and survival of [Specific Shellfish Species]?

Invasive Species and Their Impact on Biodiversity

• Research Question: What has been the impact of the invasive Zebra Mussel on native species in the Great Lakes?
• Research Question: How do invasive plant species [Specify Species] affect the growth and survival of native plants in [Specific Region]?

Conservation Efforts for Endangered Species

• Research Question: How effective have conservation strategies been in increasing the population of the Giant Panda in China?
• Research Question: What are the impacts of anti-poaching measures on the survival of Rhinoceros populations in Africa?

Climate Change and Its Effects on Ecosystems

• Research Question: How is the melting of Arctic sea ice affecting the habitat and migration patterns of polar bears?
• Research Question: What are the effects of rising global temperatures on plant and animal life in the Alpine ecosystems?

Transitioning from the external world of Ecology and Environmental Science, we now turn to the internal intricacies of Human Physiology and Health. 

This shift brings us from exploring external ecosystems to understanding our body’s inner workings, a world where lifestyle choices meet biological responses.

Human Physiology and Health

Let’s chat about Human Physiology and Health, the amazing science of how our bodies work and how we keep them ticking. We’re diving headfirst into the world of nutrition and diet – what you eat isn’t just about taste, it’s about your health too! 

Then, we’ll check out how exercise, that thing we all know we should do more of, affects our bodies in awesome ways. Ever wondered about the science of sleep and how it messes with your brain when you don’t catch enough Z’s? We’ll cover that, along with the mysteries of genetics in diseases, and how our environment plays a sneaky role in triggering allergies. 

It’s going to be an eye-opening ride through the wonders of our bodies!

Nutrition and Diet’s Impact on Human Health

• Research Question: How does adherence to the Mediterranean diet affect cardiovascular health indicators in adults?
• Research Question: What is the impact of a long-term vegan diet on nutrient absorption and health in teenagers?

Exercise Physiology

• Research Question: How does HIIT affect cardiovascular fitness in young adults?
• Research Question: What are the effects of regular yoga practice on stress and anxiety levels in college students?

Neurobiology of Sleep

• Research Question: How does sleep deprivation impact cognitive performance and memory in high school students?
• Research Question: What is the relationship between sleep patterns and academic performance in IB students?

Genetic Factors in Diseases

• Research Question: How do specific genetic factors contribute to the risk of developing Alzheimer’s disease?
• Research Question: What is the contribution of genetics to the onset of Type 2 Diabetes in populations with high prevalence rates?

Impact of Environmental Factors on Allergies

• Research Question: What is the correlation between air pollution levels and the prevalence of respiratory allergies in urban children?
• Research Question: How has climate change influenced the prevalence and severity of allergic diseases in [Specific Region]?

Moving from Human Physiology and Health, we zoom into the realm of Cellular and Molecular Biology. 

Here, we swap the broader human health perspective for a closer look at life’s building blocks, delving into the microscopic universe that operates within every living being.

Cellular and Molecular Biology

Ready to geek out on Cellular and Molecular Biology? This is where we get down to the nitty-gritty of life – the cells and molecules that make up every living thing. 

We’re talking about the big bad world of cancer cells and what makes them tick, the fascinating process of how our cells make proteins, and the cutting-edge stuff like stem cell research and how viruses play a game of cat and mouse with our bodies. 

Meanwhile, make sure also to check our article with biology research paper topics for all students.

Plus, we’ll unravel the mysteries of how our cells fix their own DNA. It’s like being a detective, but for biology. Trust me, it’s cooler than it sounds!

Gene Expression in Cancer Cells

• Research Question: How does gene expression in breast cancer cells differ from that in normal breast tissue?
• Research Question: What role do specific oncogenes play in the development of colorectal cancer?

Protein Synthesis and Its Regulation

• Research Question: How is protein synthesis regulated in response to physical exercise in human muscle cells?
• Research Question: How do bacterial cells regulate protein synthesis under environmental stress conditions?

Stem Cell Research and Regenerative Medicine

• Research Question: What is the potential of stem cell therapy in the treatment of Parkinson’s Disease?
• Research Question: How can stem cells be used to repair damaged heart tissue?

Viral Replication and Host Interaction

• Research Question: How does HIV replicate within human cells, and what is its impact on the immune system?
• Research Question: How does the Influenza virus adapt to host immune responses over time?

DNA Repair Mechanisms

• Research Question: How do DNA repair mechanisms change as human cells age?
• Research Question: How effective are DNA repair mechanisms in skin cells exposed to different levels of UV radiation?

After diving into the microcosm of cells and molecules, we transition to Plant Biology. 

This shift steers us from the foundations of life at the cellular level to the diverse world of plants, exploring how these organisms harness and embody basic biological principles.

Plant Biology

Let’s dive into the world of Plant Biology! Plants are not just pretty to look at; they’re the backbone of all life on Earth. 

We’ll be talking about how they turn sunlight into food – a process that’s as important as it is fascinating. Ever wonder how plants are coping with our changing climate or what superpowers medicinal plants have? We’ve got that covered. 

We’ll also explore the secret life of plants, how they defend themselves against enemies, and the science behind making them stronger and better through genetic modification. 

It’s time to get our hands dirty and uncover the secrets of the plant world!

Photosynthesis Variations Among Plant Species

• Research Question: How does photosynthetic efficiency compare between C3 and C4 plants under varying light conditions?
• Research Question: What is the effect of varying light intensities on the rate of photosynthesis in [Specific Aquatic Plant Species]?

Impact of Climate Change on Plant Growth

• Research Question: How are Arctic tundra plants adapting their growth patterns in response to global warming?
• Research Question: What is the impact of elevated atmospheric CO2 levels on the growth of [Specific Plant Species]?

Medicinal Properties of Plants

• Research Question: What are the anti-inflammatory properties of [Specific Medicinal Plant] and how can they be harnessed?
• Research Question: What is the antioxidant capacity of different herbal teas, and how does it affect human health?

Plant Defense Mechanisms Against Pathogens

• Research Question: How do [Specific Plant Species] defend themselves against fungal infections?
• Research Question: What role do secondary metabolites play in the defense mechanisms of [Specific Plant Species] against herbivores?

Genetic Modification and Crop Improvement

• Research Question: How effective are genetically modified crops in resisting drought conditions compared to traditional varieties?
• Research Question: What is the impact of genetic modification on the nutrient content of [Specific Crop]?

From the stationary life of plants, we now step into the dynamic world of Animal Behavior and Physiology. This change of scene introduces us to the complex behaviors and physiological adaptations of animals, offering a contrasting perspective to plant biology.

Animal Behavior and Physiology

Let’s jump into the wild and wonderful world of Animal Behavior and Physiology. This is where we get to spy on the animal kingdom and learn about their secret lives. 

From the social gossip of insects to the globe-trotting adventures of migratory birds, animals have some amazing stories to tell. 

We’ll also look at how marine animals have adapted to their deep and mysterious homes, how animals respond when their environment goes bonkers, and the hormonal soap operas that dictate their lives. 

It’s like being a fly on the wall in the most interesting nature documentary ever!

Social Behavior in Insects

• Research Question: How does the social structure of honeybee colonies affect their survival and productivity?
• Research Question: What are the primary communication mechanisms used in ant colonies, and how do they impact colony efficiency?

Bird Migration Patterns

• Research Question: How has climate change affected the migration routes of [Specific Bird Species]?
• Research Question: How do magnetic fields influence the migration patterns of [Specific Bird Species]?

Physiological Adaptations in Marine Mammals

• Research Question: What physiological adaptations allow sperm whales to dive to extreme depths?
• Research Question: How do polar bears regulate their body temperature in the Arctic environment?

Impact of Environmental Stressors on Animal Behavior

• Research Question: How does underwater noise pollution affect the behavior and communication of dolphins?
• Research Question: What are the effects of urban light pollution on the nocturnal activities of [Specific Nocturnal Animal Species]?

Endocrine Regulation in Animals

• Research Question: How do hormones regulate the reproductive behaviors in [Specific Bird Species]?
• Research Question: How do stress-induced cortisol levels affect the behavior of [Specific Wild Animal Species] in their natural habitat?

Leaving the observable world of animals, we enter the less visible but equally important sphere of Microbiology and Biotechnology. This transition takes us from larger life forms to the microscopic, where tiny organisms significantly impact our health, environment, and technology.

Microbiology and Biotechnology

Alright, microbe hunters and tech wizards, it’s time to zoom in on Microbiology and Biotechnology. This is the world of the tiny, where bacteria and viruses hang out, and where science meets innovation . 

We’re going to explore the battleground of antibiotic resistance, how we can use tiny organisms to clean up our messes, and the mind-blowing possibilities of genetic engineering. 

Ever thought about how your gut buddies – the microbiome – affect your health? We’ll get into that too, along with the yeast party that’s behind some of your favorite bread and beverages.

Antibiotic Resistance in Bacteria

• Research Question: What factors have contributed to the rise of Methicillin-resistant Staphylococcus aureus (MRSA) in hospitals?
• Research Question: What are the primary mechanisms of antibiotic resistance in Escherichia coli strains found in [Specific Environment]?

Use of Microorganisms in Bioremediation

• Research Question: How effective are specific bacterial species in the bioremediation of oil spills?
• Research Question: What is the effectiveness of using fungi in the phytoremediation of soils contaminated with heavy metals?

Genetic Engineering and Its Applications

• Research Question: What is the potential of CRISPR-Cas9 technology in preventing genetic diseases?
• Research Question: How has genetic engineering been used to enhance the nutritional quality of [Specific Crop]?

Role of Microbiome in Human Health

• Research Question: What is the relationship between the gut microbiome and obesity in adults?
• Research Question: How does the diversity of the human microbiome affect immune system functioning?

Yeast Fermentation and Its Industrial Applications

• Research Question: How efficient is yeast fermentation in the production of biofuels compared to traditional methods?
• Research Question: How do different yeast strains affect the flavor profiles in beer brewing?

Finally, we shift from the practical applications in Microbiology and Biotechnology to the historical narrative of Evolution and Genetics. This move links present-day biological understanding to the historical journey of life, unraveling how genetic heritage and evolutionary processes shape all living things.

Evolution and Genetics

Ready to unravel the tales of Evolution and Genetics? This is where we figure out how life on Earth got to be as diverse and fantastic as it is. We’ll be exploring the incredible adaptations organisms have made to survive and thrive, how genetic diversity is crucial for the health of species, and the molecular secrets behind inheritance. 

Ever pondered how new species come into being or what genetics reveal about our own ancient history ? Well, you’re in for a treat. We’re about to walk through time and genes to discover the roots and branches of the tree of life. Buckle up!

Evolutionary Adaptations to Environmental Changes

• Research Question: What evolutionary adaptations have enabled cacti to thrive in harsh desert environments?
• Research Question: How have Galápagos finches undergone adaptive radiation in response to their environment?

Genetic Diversity and Population Health

• Research Question: How does genetic diversity affect the health and survival of animal populations on isolated islands?
• Research Question: How can conservation genetics be used to enhance the survival prospects of [Specific Endangered Species]?

Molecular Basis of Inheritance

• Research Question: What is the molecular basis of inheritance for Sickle Cell Anemia?
• Research Question: How can mitochondrial DNA be used to trace maternal lineage in human populations?

Speciation and Genetic Drift

• Research Question: What role has genetic drift played in the speciation of cichlids in Lake Victoria?
• Research Question: How does genetic drift affect the genetic diversity of small, isolated animal populations?

Human Evolutionary Biology

• Research Question: What evolutionary factors contributed to the development of bipedalism in early humans?
• Research Question: What are the key genetic adaptations that enable humans to live at high altitudes?

These topics and questions aim to inspire in-depth exploration and research, allowing students to delve into various aspects of biology, from molecular to ecosystem levels. 

Use them as an inspiration for your future Ib extended essay.

Select your topic wisely!

The world of biology is rich with diverse topics suitable for an Extended Essay. From the tiny intricacies of cellular biology to the broad complexities of environmental science, each area offers a unique perspective and a chance for in-depth exploration . 

The key to a successful essay is choosing a topic that not only interests you but also challenges your analytical and research skills.

Need Extra Support?

If you’re seeking guidance with your topic selection, or if you need assistance in writing or editing your Biology Extended Essay , our team at Writing Metier is here to help. 

Our experienced IB writers are equipped to provide the support you need to refine your ideas and enhance your writing. Contact us for personalized assistance, or simply fill out our online order form with details of your IB EE and ensure your essay is a reflection of your best efforts.

Free topic suggestions

Vasy kafidoff.

Vasyl Kafidoff is a co-founder and CEO at WritingMetier. He is interested in education and how modern technology makes it more accessible. He wants to bring awareness about new learning possibilities as an educational specialist. When Vasy is not working, he’s found behind a drum kit.

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Extended Essay: Sciences: Biology

• Step 1 - Choosing a Subject
• Step 2 - Choosing a Topic
• Step 3 - Draft a Research Question
• Step 4 - Finding Sources
• Step 5 - Evaluating Information
• Step 6 - Bibliography & Citation
• Step 7 - Organizing Information
• The Arts: Visual Arts
• Individuals & Societies: Business Management
• Individuals & Societies: History
• Individuals & Societies: Psychology
• Language Acquisition
• Language and Literature
• Sciences: Biology
• Sciences: Sports, Exercise, and Health Sciences
• Interdisciplinary Papers: World Studies
• Assessment Criteria
• Research Questions
• Investigation

Extended Essay in Biology

Extended Essays in Biology

Choosing a topic

Choosing a Topic

Biology is the science that deals with living organisms and life processes. A biology EE should incorporate biological theory and emphasize why it is relevant today.

The topic must relates specifically to biology. Many topics can be approached from different viewpoints, but for an EE in biology the treatment of the topic must be clearly biological. For example, an EE in an interdisciplinary area such as biochemistry will, if registered under the subject of biology, be judged solely on its biological content.

Disease, for example, could be considered through many different lenses. A biology paper about diseases would focus on their impact on particular organisms or life processes, and not on medical treatment, or the economic effects of the disease on society.

Approaches to research

Primary Research

Essays in biology may be based on data collected by the student through:

Essays that involve lab work, or fieldwork, should include a clear and concise description of the experimental procedure. Students taking an experimental approach must also consult secondary sources.

Secondary Research

Students can base their essays on data or information obtained from literature (secondary studies). However, in this case they should use the data in an original way. Essays that simply restate facts or data taken directly from the sources are of little value.

Biology Sources

Even students doing primary research will still need to reference secondary sources. And students relying entirely on secondary sources will need to find sources not only of written information but also experimental data which they can analyze.

Writing the Essay

An essay in the sciences requires is more than just generating and presenting data. Analysis of the data is also essential. The main body of the essay should consist of an argument or evaluation based on the data or information presented . You can gather your own data through a variety of methods, or rely on secondary data. You should use graphs, tables, or diagrams to point out the significance of your findings.

You should ensure that the main body of the essay is well structured and has an obvious logical progression. You can use numbered and headed paragraphs to impose a clear structure. Your evaluation should show that you understand the the data they have collected and its significance to the world.

In your analysis, you should also describe and explain the limitations imposed on the research by factors such as

• the suitability and reliability of the sources accessed
• accuracy and precision of measuring equipment
• sample size
• validity and reliability of statistics

Students  should also consider biological limitations such as:

• those arising from the problem of repeatability and control when using living material
• the difficulties of generalizing from research based on a single type of organism or environment.

Exceptions for Safety and Academic Honesty

Safety and Ethics in Choosing a Topic

In all cases where human subjects are used as the basis for an investigation, clear evidence of informed consent must be provided in accordance with the IB guidelines.

Some topics may be inadmissible because their means of investigation are unethical. For example, investigations that:

• are based on experiments likely to inflict pain on, or cause stress to, living organisms
• are likely to have a harmful effect on health, eg culturing micro-organisms at or near body temperature (37°C)
• involve access to, or publication of, confidential medical information.

Some topics may be unsuitable because of safety issues. Adequate safety apparatus and qualified supervision is required for experiments involving dangerous substances such as:

• toxic or dangerous chemicals
• carcinogenic substances
• radioactive materials.

Other topics may be unsuitable because the outcome is already well known and documented in standard textbooks.

Assessed Student Work

• The Antimicrobial Effects of Metals Copper, Barium and Silver on the Growth of Bacteria
• Effects of different calcium salts in growth solutions on the growth of the stems of basil (Ocimum basilicum) plants grown hydroponically
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IB Extended Essay: 250+ Ideas and Guide

Charles Whitehouse

What is the IB Extended Essay?

The Extended Essay , along with the Creativity, Activity, Service component and Theory of Knowledge , forms an integral part of the IB Diploma Programme . It offers IB high school students an opportunity to explore a topic of personal interest in-depth, develop research and writing skills, and experience the rigours of academic investigation.

One of the distinguishing features of the IB Extended Essay is its length. It requires students to write a substantial essay of up to 4,000 words, which is equivalent to about 16-20 pages. This allows students to delve into their chosen subject matter and demonstrate their ability to engage with complex ideas.

Over 88,000 IBDP students across the globe undertook the Extended Essay in 2022 as part of their IB Diploma requirements. It has been lauded as an effective preparation for university-level research and writing, helping students develop critical thinking, analytical, and independent research skills.

The Extended Essay is an opportunity for students to apply the knowledge and skills gained from their chosen subjects in a multidisciplinary manner. It encourages interdisciplinary exploration, enabling students to connect different areas of knowledge and develop a deeper understanding of the subject matter.

In order to successfully complete the Extended Essay, students must adhere to a structured process that includes selecting a research question, conducting thorough research, organising their findings, and presenting their analysis and conclusions in a coherent manner. By undertaking the IB Extended Essay, students not only enhance their academic skills but also develop essential skills such as time management, critical thinking, and independent inquiry.

How to Choose Your Extended Essay Research Question?

Choosing a research question for your IB Extended Essay is a crucial step that sets the direction and scope of your investigation. Here are some key considerations to keep in mind when selecting your research question:

1. Personal Interest: Choose a topic that genuinely interests you. Passion for the subject matter will fuel your motivation and dedication throughout the research process.

2. Feasibility: Ensure that your research question is manageable within the constraints of the Extended Essay. Consider the availability of resources, time required for research and analysis, and the scope of the topic.

3. Specificity: Formulate a research question that is focused and specific. A broad question may lead to a lack of depth in your analysis, while a narrow question may limit the availability of relevant sources and data.

4. Relevance: Select a research question that is relevant to the subject you are investigating. It should align with the objectives and content of the chosen subject area.

5. Novelty: Aim for a research question that offers a unique perspective or contributes to existing knowledge. Originality in your approach and analysis can make your Extended Essay stand out.

6. Consultation: Seek guidance from your teachers, mentors, or IB tutors . They can provide valuable insights and help you refine your research question.

Remember that your research question will shape the entire trajectory of your Extended Essay, so take the time to carefully consider and refine it before proceeding with your research.

Now, let's explore a variety of ideas for each subject, providing you with a diverse range of potential topics to consider for your IB Extended Essay.

Top 10 IB Extended Essay Subjects in 2022

Extended Essay Ideas for Each Subject

1. How Do Fibonacci Sequences Apply in Real World Scenarios?

2. Do Fractals Have a Role in Modelling Weather Patterns?

3. Is the Monty Hall Problem Really Counter-Intuitive? A Statistical Analysis.

4. To What Extent Does the Golden Ratio Appear in Architecture?

5. How Does Bayesian Probability Predict Election Outcomes?

6. The Role of Game Theory in the Cold War: A Mathematical Perspective.

7. Can Catastrophe Theory Model Stock Market Crashes?

8. How Effective are Neural Networks in Predicting Future Events?

9. A Study of the Mathematical Strategies Employed in Chess.

10. Comparing the Accuracy of Different Numerical Methods for Solving Differential Equations.

11. Is Bitcoin's Value Deterministic or Stochastic?

12. How Does Voronoi Diagram Optimize Emergency Service Locations?

13. Using the Markov Chain to Predict Weather Patterns.

14. To What Extent is RSA Encryption Secure?

15. How Does Linear Algebra Apply in Computer Graphics?

16. An Investigation into the Math Behind Google's PageRank Algorithm.

17. How Effective is the Math Behind Machine Learning Algorithms?

18. Exploring the Effect of Maths in Optimising Traffic Flow.

19. Are There Mathematical Patterns in Successful Lottery Numbers?

20. How Efficiently Can Prime Numbers Be Generated?

Have a look at our comprehensive set of IB Study Notes and IB Practice Questions , developed by expert IB teachers and examiners!

English Literature

1. The Role of Feminism in Jane Austen's Pride and Prejudice.

2. A Study of Racial Identity in Toni Morrison's The Bluest Eye.

3. Is Hamlet Truly Mad or Just Pretending? An Analysis.

4. The Impact of Post-Colonialism in Chinua Achebe's Things Fall Apart.

5. How Does Orwell Use Language to Depict Dystopia in 1984?

6. The Influence of Gothic Elements in Emily Bronte's Wuthering Heights.

7. The Depiction of Mental Illness in Sylvia Plath's The Bell Jar.

8. The Role of Nature in William Wordsworth's Romantic Poetry.

9. The Effect of Social Hierarchy in F. Scott Fitzgerald's The Great Gatsby.

10. How Does Harper Lee Convey Themes of Racial Injustice in To Kill a Mockingbird?

11. Exploring Gender Stereotypes in George Eliot's Middlemarch.

12. The Role of Supernatural in Shakespeare's Macbeth.

13. Exploring the Influence of Marxism in George Orwell's Animal Farm.

14. A Study of Homosexuality in Oscar Wilde's The Picture of Dorian Gray.

15. How Does Virginia Woolf Explore Feminism in Mrs Dalloway?

16. The Depiction of War in Erich Maria Remarque's All Quiet on the Western Front.

17. The Role of the American Dream in Arthur Miller's Death of a Salesman.

18. The Use of Symbolism in Nathaniel Hawthorne's The Scarlet Letter.

19. A Study of Isolation in Mary Shelley's Frankenstein.

20. The Impact of Social Class in Charles Dickens' Great Expectations.

1. How Do Different pH Levels Affect the Activity of Enzymes in Yeast?

2. Investigating the Effects of Light Intensity on the Rate of Photosynthesis.

3. How Does Temperature Affect the Germination of Seeds?

4. Impact of Varying Salinity Levels on Brine Shrimp Survival Rates.

5. The Role of Epigenetics in Gene Expression: Case Study on Identical Twins.

6. To What Extent Do Different Antibiotics Inhibit Bacterial Growth?

7. How Does Caffeine Affect the Heart Rate of Daphnia?

8. An Investigation into the Impact of Pollution on Local Plant Diversity.

9. The Impact of Various Drugs on the Pulsation Rate of Lumbriculus variegatus.

10. Comparing the Efficacy of Natural Vs. Synthetic Pesticides on Plant Growth.

11. The Role of Gut Microbiota in Obesity: A Literature Review.

12. Does the Level of Vitamin C in Oranges Change Over Time?

13. How Do Different Types of Soil Affect Earthworm Activity?

14. Investigating the Correlation Between Altitude and Plant Biodiversity.

15. Analysis of Microplastic Concentration in Local Freshwater Bodies.

16. Impact of Noise Pollution on Birdsong: A Case Study.

17. A Comparison of Antibacterial Properties in Manuka Honey Vs. Regular Honey.

18. The Effect of Different Light Wavelengths on the Growth of Pea Plants.

19. How Does Exercise Intensity Impact Blood Glucose Levels?

20. Is There a Correlation Between Water pH and Aquatic Life Diversity?

1. How Does Temperature Affect the Rate of Reaction in the Decomposition of Hydrogen Peroxide?

2. Investigating the Effectiveness of Different Antacids on Stomach Acid.

3. A Comparative Study on the Vitamin C Concentration in Different Citrus Fruits.

4. How Does Cooking Time Affect the Vitamin C Levels in Vegetables?

5. To What Extent Does Enzyme Concentration Affect the Fermentation of Yeast?

6. Analysis of Caffeine Content in Different Types of Tea .

7. The Effect of Different Factors on the Corrosion of Iron.

8. How Does the Concentration of Sodium Chloride Affect the Electrolysis of Water?

9. Comparing the Energy Output of Different Biofuels.

10. The Effect of Temperature on the Crystal Size in the Recrystallisation Process.

11. Comparing the Acidities of Natural and Processed Foods.

12. Investigating the Effect of Various Catalysts on the Rate of Hydrogen Peroxide Decomposition.

13. Synthesis of Aspirin: A Study on the Purity of the Product.

14. Comparing the Efficiency of Different Types of Solar Panels.

15. Investigating the Impact of Carbonation on pH Levels in Various Soft Drinks.

16. The Effect of Chelating Agents on the Solubility of Metal Ions.

17. A Study on the Photodegradation of Dyes Using Titanium Dioxide.

18. How Do Different Sugar Types Affect Fermentation Rates in Yeast?

19. Analysis of Water Hardness in Various Local Water Supplies.

20. Investigating the Efficacy of Different Water Filtration Methods in Removing Heavy Metals.

1. Investigating the Relationship Between the Drop Height and Crater Size in a Simulated Impact.

2. How Does the Angle of Incidence Affect the Efficiency of a Solar Panel?

3. Analysing the Relationship Between the Length of a Pendulum and Its Period.

4. To What Extent Does the Mass of a Projectile Affect Its Range?

5. Investigating the Factors Affecting the Drag Force on a Falling Object.

6. A Study on the Efficiency of Different Insulating Materials in Reducing Heat Loss.

7. How Does the Depth of Water Affect Wave Speed?

8. The Relationship Between the Angle of Release and the Distance Traveled by a Trebuchet.

9. Investigating the Effect of Surface Area on Terminal Velocity.

10. How Does the Thickness of a Wire Affect Its Electrical Resistance?

11. The Impact of Varying Air Pressure on the Lift Force of an Airfoil.

12. Analysing the Relationship Between the Magnitude of an Earthquake and the Distance from the Epicentre.

13. Investigating the Factors Affecting the Speed of Sound in Different Media.

14. How Does the Concentration of a Solution Affect Its Refractive Index?

15. The Effect of Various Materials on the Absorption of Radiation.

16. A Study on the Efficiency of Wind Turbines at Different Wind Speeds.

17. Investigating the Effect of Temperature on the Viscosity of Liquids.

18. How Does the Type of Material Affect the Transmission of Sound Waves?

19. The Relationship Between the Angle of a Ramp and the Frictional Force Acting on an Object.

20. A Study on the Factors Affecting the Strength of Electromagnets.

1. The Impact of Social Media on Teenagers' Mental Health: A Cross-Cultural Study.

2. Investigating the Role of Parenting Styles in Child Development.

3. The Effect of Sleep Deprivation on Cognitive Performance.

4. How Does Classical Conditioning Apply in Advertising Strategies?

5. The Impact of Colour on Consumer Behaviour: A Study in Retail Settings.

6. The Role of Social Support in Coping with Stress.

7. To What Extent Does Personality Influence Career Success?

8. Investigating the Effect of Group Dynamics on Decision Making.

9. The Impact of Music on Cognitive Task Performance.

10. A Study on the Effectiveness of Different Techniques for Reducing Test Anxiety.

11. The Relationship Between Emotional Intelligence and Academic Performance.

12. Analysing the Impact of Stereotype Threat on Test Performance.

13. Investigating the Factors Affecting the Formation of False Memories.

14. How Does the Bystander Effect Manifest in Online Settings?

15. The Role of Mindfulness in Reducing Stress and Anxiety.

16. Analysing the Impact of Gender Stereotypes on Occupational Choices.

17. Investigating the Influence of Cultural Background on Conflict Resolution Styles.

18. The Impact of Video Games on Aggression: A Meta-Analysis.

19. A Study on the Factors Affecting Altruistic Behaviour.

20. The Role of Attachment Styles in Romantic Relationships.

1. Investigating the Impact of Unemployment on Crime Rates in Urban Areas.

2. The Effect of Immigration on Wage Levels: A Case Study.

3. To What Extent Does Government Spending Influence Economic Growth?

4. A Comparative Analysis of the Economic Impact of Tourism in Coastal Vs. Inland Regions.

5. Assessing the Impact of Brexit on the UK's Trade Balance.

6. The Role of Microfinance in Alleviating Poverty in Rural India.

7. Investigating the Effects of Minimum Wage Policies on Small Businesses.

8. The Impact of Covid-19 on the Global Supply Chain: A Study on the Auto Industry.

9. How Do Oil Prices Affect Inflation Rates? A Historical Analysis.

10. A Study on the Relationship Between Income Inequality and Economic Growth.

11. The Effect of Trade Tariffs on Domestic Industries: The Case of US-China Trade War.

12. The Role of Foreign Direct Investment in Economic Development of Emerging Markets.

13. To What Extent Does Education Contribute to Economic Productivity?

14. The Impact of Climate Change Policies on the Energy Sector.

15. Evaluating the Effectiveness of Fiscal Policy in Combating Recessions.

16. The Role of the Informal Economy in Urban Development: A Case Study.

17. Investigating the Correlation Between Real Estate Prices and Economic Growth.

18. The Impact of Population Aging on Healthcare Expenditure .

19. Assessing the Economic Consequences of Natural Disasters: A Case Study.

20. The Effect of Technological Advancements on Employment Rates in the Manufacturing Sector.

Business Management

1. The Impact of Leadership Styles on Employee Motivation in Tech Start-ups.

2. How Does Corporate Social Responsibility Influence Brand Image?

3. The Role of Human Resource Management in Employee Retention.

4. Investigating the Impact of E-commerce on Traditional Retail Businesses.

5. How Do Changes in Interest Rates Affect Small Business Financing?

6. The Role of Innovation in the Competitive Advantage of Businesses.

7. Investigating the Effects of Workplace Diversity on Team Performance.

8. The Impact of Organisational Culture on Employee Job Satisfaction.

9. How Does Supply Chain Management Affect the Profitability of Manufacturing Firms?

10. The Role of Digital Marketing in Enhancing Customer Engagement.

11. Assessing the Impact of Brexit on the Business Strategy of UK-based Companies.

12. The Effect of Ethical Practices on Business Reputation.

13. Investigating the Role of Strategic Alliances in Enhancing Market Position.

14. The Impact of Covid-19 on Remote Work Policies: A Case Study.

15. How Does Customer Relationship Management Influence Customer Loyalty?

16. The Effect of Government Regulations on Startup Ecosystem.

17. Evaluating the Role of Corporate Governance in Financial Performance.

18. The Impact of Merger and Acquisition on Employee Morale.

19. The Effect of Green Initiatives on Business Sustainability.

20. The Role of Business Intelligence in Decision-making.

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1. Investigating the Impact of Urbanisation on Local Biodiversity: A Case Study.

2. The Role of Climate Change in the Spread of Vector-borne Diseases.

3. The Effect of River Diversions on Local Ecosystems.

4. Assessing the Impact of Deforestation on Local Climate: A Case Study.

5. The Role of Tourism in the Sustainable Development of Coastal Regions.

6. Investigating the Impact of Gentrification on Urban Neighbourhoods: A Case Study.

7. The Effect of Climate Change on the Availability of Freshwater Resources.

8. Assessing the Impact of Agricultural Practices on Soil Erosion in Rural Areas.

9. Analysing the Relationship Between Population Density and Transportation Infrastructure.

10. The Role of Renewable Energy in Reducing Carbon Emissions: A Case Study.

11. Investigating the Impact of Land Reclamation on Coastal Ecosystems.

12. The Effect of Urban Sprawl on Air Quality in Major Cities.

13. Assessing the Vulnerability of Coastal Communities to Sea Level Rise.

14. The Impact of Industrialisation on River Water Quality: A Case Study.

15. How Does Waste Management Affect the Sustainability of Urban Areas?

16. Investigating the Relationship Between Income Inequality and Spatial Segregation.

17. The Role of Urban Green Spaces in Enhancing Residents' Well-being.

18. The Impact of Natural Disasters on Economic Development in Small Island Nations.

19. Analysing the Factors Affecting the Distribution of Earthquakes and Volcanic Activity.

20. The Effect of Land Use Change on Flood Risk in Urban Areas.

Computer Science

1. Evaluating the Effectiveness of Different Machine Learning Algorithms in Predicting Stock Prices.

2. Investigating the Impact of Encryption Techniques on Data Security.

3. The Role of Artificial Intelligence in Automating Routine Tasks.

4. How Does the Implementation of Blockchain Technology Affect Supply Chain Management?

5. Assessing the Impact of Social Media Algorithms on User Behaviour.

6. The Effect of Augmented Reality on the User Experience in Mobile Applications.

7. Investigating the Feasibility of Quantum Computing in Solving Complex Problems.

8. The Role of Big Data Analytics in Enhancing Business Decision-making.

9. Analysing the Factors Affecting the Adoption of Cloud Computing by SMEs.

10. The Impact of Cybersecurity Measures on the Prevention of Data Breaches.

11. Investigating the Ethical Implications of Facial Recognition Technology.

12. The Effect of Internet of Things on Energy Efficiency in Smart Homes.

13. Assessing the Impact of Virtual Reality on Gaming Industry.

14. The Role of Natural Language Processing in Enhancing Human-Computer Interaction.

15. How Does the Development of Autonomous Vehicles Affect Traffic Management?

16. Investigating the Scalability Issues in Distributed Systems.

17. The Effect of Software Development Methodologies on Project Success Rates.

18. The Impact of Artificial Intelligence on Job Market: A Case Study.

19. Analysing the Factors Affecting the Performance of Mobile Networks.

20. The Role of Bioinformatics in Personalised Medicine.

Environmental Systems and Societies

1. Investigating the Impact of E-waste on Soil and Water Quality.

2. The Effect of Climate Change on Coral Reef Ecosystems.

3. Assessing the Impact of Invasive Species on Native Biodiversity.

4. The Role of Sustainable Agriculture in Reducing Environmental Degradation.

5. Analysing the Factors Affecting the Ozone Layer Depletion.

6. The Impact of Plastic Pollution on Marine Life: A Case Study.

7. Investigating the Feasibility of Carbon Capture and Storage Technologies.

8. The Role of Urban Planning in Reducing Air Pollution in Cities.

9. The Effect of Overfishing on Marine Ecosystems: A Case Study.

10. Assessing the Impact of Renewable Energy Sources on Carbon Emissions.

11. Investigating the Relationship Between Deforestation and Climate Change.

12. The Impact of Industrial Pollution on Local Communities' Health: A Case Study.

13. The Role of Waste Management in Reducing Ocean Pollution.

14. The Effect of Pesticides on Soil Microorganism Diversity.

15. Assessing the Impact of Dams on River Ecosystems.

16. Investigating the Efficacy of Reforestation Efforts in Carbon Sequestration.

17. The Role of Environmental Education in Promoting Sustainable Consumption Behaviours.

18. The Effect of Acid Rain on Forest Ecosystems: A Case Study.

19. Analysing the Impact of Mining Activities on Local Water Quality.

20. The Role of Green Infrastructure in Enhancing Urban Sustainability.

Social and Cultural Anthropology

1. Investigating the Impact of Globalisation on Indigenous Cultures: A Case Study.

2. The Role of Language in Shaping Cultural Identity.

3. Analysing the Influence of Cultural Practices on Gender Roles.

4. The Effect of Migration on Cultural Assimilation: A Case Study.

5. The Impact of Western Media on Body Image Perceptions in Non-Western Societies.

6. Investigating the Relationship Between Religion and Social Norms in a Given Society.

7. The Role of Cultural Traditions in Shaping Food Habits.

8. The Impact of Social Media on Cultural Exchange: A Case Study.

9. Analysing the Influence of Socioeconomic Status on Educational Attainment.

10. The Effect of Colonialism on Cultural Diversity: A Case Study.

11. Investigating the Role of Folklore in Preserving Cultural Heritage.

12. The Impact of Urbanisation on Traditional Social Structures: A Case Study.

13. The Role of Music and Dance in Cultural Expression.

14. Analysing the Influence of Cultural Factors on Mental Health.

15. The Effect of Cultural Beliefs on Healthcare Practices: A Case Study.

16. Investigating the Impact of Tourism on Local Cultures.

17. The Role of Rituals and Ceremonies in Social Cohesion.

18. The Impact of Legal Systems on Gender Equality: A Comparative Study.

19. Analysing the Cultural Adaptations of Immigrants in a New Society.

20. The Role of Art and Literature in Reflecting Social Changes.

Visual Arts

1. Investigating the Influence of Social Issues on Banksy's Street Art.

2. The Impact of Japanese Art on Claude Monet’s Painting Style.

3. Analysing the Representation of Women in Renaissance Paintings.

4. The Role of Surrealism in Salvador Dali's Artistic Expression.

5. Investigating the Cultural Symbolism in Frida Kahlo’s Self-portraits.

6. The Impact of Pop Culture on Andy Warhol's Art .

7. Analysing the Use of Light and Shadow in Caravaggio's Paintings.

8. The Role of Spirituality in Wassily Kandinsky's Abstract Art.

9. The Influence of African Art on Picasso's Cubist Period.

10. The Depiction of War and Its Aftermath in Otto Dix's Works.

11. Investigating the Use of Colour in Mark Rothko’s Abstract Paintings.

12. The Role of Indigenous Culture in Emily Carr's Landscape Paintings.

13. Analysing the Evolution of Political Themes in Chinese Contemporary Art.

14. The Effect of the Harlem Renaissance on Aaron Douglas' Art.

15. Investigating the Use of Geometric Shapes in Kandinsky’s Abstract Art.

16. The Role of Dutch Culture and Society in Vermeer's Paintings.

17. The Depiction of Nature in Georgia O'Keeffe's Works.

18. Analysing the Impact of Feminism on Barbara Kruger's Art.

19. Investigating the Influence of Post-Impressionism on Vincent van Gogh’s Style.

20. The Representation of the American Dream in Edward Hopper's Paintings.

World Studies

1. Investigating the Global Impact of the Covid-19 Pandemic on Mental Health.

2. The Effect of Climate Change on Food Security in Sub-Saharan Africa.

3. Analysing the Influence of Globalisation on Indigenous Cultures.

4. The Role of International Law in Resolving Border Disputes: A Case Study.

5. Investigating the Impact of Global Trade Policies on Developing Economies.

6. The Effect of Globalisation on Income Inequality: A Comparative Study.

7. Analysing the Influence of Western Media on Global Perceptions of Beauty.

8. The Role of International Organizations in Addressing the Refugee Crisis.

9. Investigating the Global Response to the Rise of Cybercrime.

10. The Impact of Climate Change on Natural Disaster Frequency and Severity Worldwide.

11. Analysing the Influence of Globalisation on Language Diversity.

12. The Role of Technology in Bridging the Education Gap in Developing Countries.

13. Investigating the Global Impact of Antibiotic Resistance.

14. The Effect of International Trade on Cultural Exchange: A Case Study.

15. Analysing the Impact of Global Warming on Polar Ecosystems.

16. The Role of the United Nations in Promoting Global Gender Equality.

17. Investigating the Impact of Social Media on Political Activism Worldwide.

18. The Effect of Globalisation on the Sustainability of Traditional Crafts.

19. Analysing the Global Strategies for Wildlife Conservation.

20. The Role of International Cooperation in Space Exploration.

How to Write a Great IB Extended Essay

Crafting an exceptional IB Extended Essay requires a combination of strategic planning, critical thinking, and effective writing. In this guide, we will provide you with valuable insights and practical advice to help you excel in your writing journey and produce an outstanding essay.

1. Develop a Clear and Coherent Structure : Creating a well-organised structure is crucial to convey your ideas effectively. Start by outlining the main sections and subtopics of your essay. Ensure a logical flow of information, with each paragraph building upon the previous one. This will guide the reader through your arguments and analysis smoothly.

2. Conduct Thorough and Methodical Research : Thorough research forms the foundation of a strong Extended Essay. Dive into reputable sources, including academic journals, books, and credible websites. Gather evidence, data, and expert opinions to support your arguments. Take meticulous notes and properly cite your sources to maintain academic integrity.

3. Apply Critical Thinking and Evaluation : Engage in critical analysis by examining and evaluating the evidence you've gathered. Assess the strengths and weaknesses of different viewpoints, theories, or methodologies. Develop your own informed perspective and present a well-reasoned argument supported by reliable evidence.

4. Craft Engaging and Coherent Paragraphs : Each paragraph should focus on a specific idea or argument, clearly stated in a topic sentence. Support your claims with evidence, examples, and relevant data. Use smooth transitions between paragraphs to ensure a cohesive and coherent essay.

5. Revise, Edit, and Proofread : Give yourself ample time for revising, editing, and proofreading your essay. Review your work for clarity, coherence, and consistency. Check for grammar, punctuation, and spelling errors. Consider seeking feedback from teachers, peers, or mentors to gain valuable insights and improve your essay further.

We asked one IB teacher what they had to say about writing a great essay:

"The key is to choose a topic that truly ignites your curiosity, one that you are passionate about exploring. Don't be afraid to think outside the box and delve into uncharted territories. Remember, this is your chance to showcase your unique perspective and make a meaningful contribution to your chosen field. Embrace the research process, be diligent in gathering reliable sources, and let your creativity shine through in your writing. And most importantly, enjoy the journey of discovery and growth that the Extended Essay offers."

Remember, the IB Extended Essay is an opportunity to demonstrate your intellectual curiosity, research skills, and ability to present a coherent argument. Choose a topic that genuinely interests you, stay organised throughout the process, and invest time in thoughtful analysis and writing. To maximise your chances of success, you may also want to purchase an Extended Essay textbook or get the help of an IB Extended Essay tutor .

IB Extended Essay Grade Distribution in 2022

Finding Reliable Sources for Your Extended Essay

When writing your IB Extended Essay, it is essential to rely on credible and trustworthy sources. Follow these strategies to find reliable information:

1. Use Academic Databases: Access reputable databases like JSTOR and PubMed to find scholarly articles and research papers relevant to your subject.

2. Consult Library Resources: Take advantage of books, encyclopaedias, and reference materials available in your school or local library.

3. Explore Digital Libraries: Visit digital libraries such as the Digital Public Library of America and Europeana for access to a wide range of digitised resources.

4. Evaluate Websites Carefully: Verify the credibility of the author or organisation, check for peer-reviewed articles or references, and consider the domain (.edu, .gov, or .org) for reliable information.

5. Utilise Scholarly Search Engines: Utilise specialised search engines like Google Scholar and Microsoft Academic to find academic publications.

6. Consult Subject-Specific Journals: Look for reputable journals in your field and review their latest issues for current research.

7. Seek Guidance from Librarians and Experts: Librarians and subject experts can offer valuable assistance in finding reliable sources and publications.

By following these strategies and critically evaluating the sources you find, you can ensure the credibility and integrity of your Extended Essay research. Reliable sources will strengthen your arguments and provide a solid foundation for your essay.

Strategies for Conducting Primary and Secondary Research

To conduct comprehensive primary and secondary research for your essay, consider the following strategies:

Primary Research

Surveys and Questionnaires: Create well-designed surveys or questionnaires to collect data directly from participants. Utilise online survey tools like Google Forms or SurveyMonkey for wider reach and convenient data analysis.

Interviews: Conduct interviews with subject experts, professionals, or individuals relevant to your research topic. Prepare insightful questions and record their responses for later analysis.

Experiments and Observations: Design and conduct controlled experiments or observations to gather firsthand data. Document procedures, measurements, and observations accurately.

Secondary Research

Literature Review: Conduct a thorough review of existing scholarly articles, books, and reports. Analyse and synthesise the information to identify research gaps and contribute to the existing knowledge.

Online Databases: Utilise reputable academic databases such as PubMed, JSTOR, and IEEE Xplore to access peer-reviewed articles and research papers specific to your subject area.

Government and Institutional Sources: Explore official government websites, research repositories of educational institutions, and databases of international organisations for reliable data, reports, and statistics.

Subject-Specific Sources: Identify subject-specific journals, publications, and conferences related to your research topic. These sources provide up-to-date research and insights from experts in the field.

Remember to consider ethical considerations throughout your research process, including obtaining necessary permissions, maintaining confidentiality, and respecting the rights and privacy of participants. Documentation of your research methods, sources, and any challenges faced is crucial. Analyse and interpret your findings critically, using them as evidence to support your arguments and contribute to your overall analysis.

Formatting and Structure Guidelines for the IB Extended Essay

To ensure a well-organised and coherent IB Extended Essay, consider the following structure as a guideline:

1. Title Page : Include essential information such as the title, subject, research question, and candidate number. Refer to the official IB Extended Essay Guide for specific requirements.

2. Abstract: Provide a concise summary of your essay, outlining the main research question, methodology, key findings, and conclusions. Limit the abstract to 300 words.

3. Table of Contents : Create a clear and accurate table of contents that outlines the structure of your essay, including sections, subheadings, and page numbers.

4. Introduction : Start with an engaging introduction that presents the research question, provides background information, and explains the significance of the topic. Clearly state the aim and objectives of your research.

5. Body : The body of your essay should delve into your research in-depth. Organize your content into coherent paragraphs, each addressing a specific aspect of your research. Consider the following elements:

a. Literature Review: Provide an overview of the relevant literature and theories related to your research topic. Analyse existing research, highlight key concepts, and discuss any debates or gaps in knowledge.

b. Methodology: Describe the research methodology employed, including the research design, data collection methods, and ethical considerations. Explain why the chosen methods are appropriate for addressing your research question.

c. Data Analysis and Findings: Present your findings based on the data collected. Use appropriate analysis techniques, such as statistical analysis or qualitative coding, to interpret your data and draw meaningful conclusions. Include tables, charts, or graphs to support your findings.

d. Discussion: Analyse and interpret your findings in the context of your research question. Explore the implications of your results, compare them with existing research, and discuss any limitations or challenges encountered during the research process.

6. Conclusion : Summarise your key findings, address your research question, and draw meaningful conclusions based on your analysis. Reflect on the implications and broader significance of your research. Highlight any recommendations for future research or areas for further exploration.

7. References : Include a comprehensive list of all sources consulted in your research. Follow the appropriate citation style (e.g., MLA, APA, or Chicago) for in-text citations and the bibliography. Accurately cite all sources, including books, articles, websites, and any other references used.

8. Appendices (if applicable): Include any supplementary materials, such as raw data, charts, graphs, or additional supporting evidence that are relevant to your research.

Typically, the Extended Essay has a word limit of around 4,000 words. It is important to note that this word count does not include footnotes, citations, and the bibliography. Additionally, the essay should be formatted using a standard font (e.g., Times New Roman or Arial) and a font size of 12 points. It is recommended to have double-spacing throughout the essay and to include page numbers.

The IB Extended Essay Assessment Criteria and Grading

The IB Extended Essay is assessed by examiners appointed by the IB on a scale of 0 to 34. Your essay will be evaluated based on five criteria, each carrying a specific point value. It is crucial to comprehend these criteria and how they relate to letter grades to gauge your performance accurately. Here's an overview of the assessment criteria:

Criterion A: Focus and Method (6 points maximum) Demonstrate a clear research question and a well-defined approach. Show how you applied appropriate research methods to investigate your topic.

Criterion B: Knowledge and Understanding (6 points maximum) Display a strong understanding of the subject matter, relevant concepts, and theories. Support your arguments with accurate and relevant evidence.

Criterion C: Critical Thinking (12 points maximum) Apply critical thinking skills to analyse and evaluate information, theories, and arguments. Demonstrate the ability to consider alternative viewpoints and draw well-reasoned conclusions.

Criterion D: Presentation (4 points maximum) Organize your essay effectively with a clear and logical structure. Use proper formatting, referencing, and citation methods consistently.

Criterion E: Engagement (6 points maximum) Engage in a reflective process throughout your research and writing. Show awareness of the strengths, limitations, and implications of your research.

To determine your letter grade, it is important to understand how the rubric assessment points correlate to the overall score. Here is a rough estimation of how the point values align with letter grades:

• 30-34: Excellent - A
• 25-29: Good - B
• 17-24: Satisfactory - C
• 9-16: Mediocre - D
• 0-8: Elementary - E

However, relying solely on these point values is not sufficient. It is crucial to thoroughly read and comprehend the specific grade descriptors provided by the IB. These descriptors offer comprehensive information about the expectations and criteria that examiners consider when assigning letter grades.

The grade you receive on your IB Extended Essay contributes to your overall International Baccalaureate Diploma Programme points score. The Extended Essay and Theory of Knowledge combined are worth up to 3 points of the total 45 points available for the IBDP .

IB Extended Essay and TOK points matrix

Final Thoughts

The IB Extended Essay is a challenging yet rewarding endeavour that allows high school students to showcase their research and analytical skills. With proper guidance and adherence to the assessment criteria, students have the opportunity to excel and achieve outstanding results. Embrace this opportunity to delve into a topic of interest, conduct in-depth research, and present your findings in a well-structured and engaging manner. Remember to consult reputable sources, seek guidance from your supervisor, and enjoy the journey of exploration and academic growth through the IB Extended Essay.

Is the IB Extended Essay hard?

The IB Extended Essay is undoubtedly a challenging undertaking, requiring significant effort and dedication, and is one of the hardest IB subjects . It is estimated that between 70% and 80% of IB students successfully complete the Extended Essay each year. Less than 14% of students received an A in the extended essay in 2022, showing its difficult.

Can you change your research question after starting the Extended Essay?

Yes, it is possible to change your research question after starting the Extended Essay. However, it is important to consult with your supervisor and ensure that the new research question still meets the requirements and aligns with the subject area you are pursuing.

When is the deadline to submit the Extended Essay?

The deadline to submit the Extended Essay can vary depending on the policies and timelines set by individual schools. In most cases, schools establish internal deadlines to ensure students have ample time to complete and revise their essays before the final submission. The typical deadline for submitting the Extended Essay is often set in the first half of the senior year, ranging from November to January. It is essential to check with your school's IB coordinator or Extended Essay coordinator for the specific deadline applicable to your academic institution.

Can you fail the Extended Essay?

Yes, it is possible to fail the Extended Essay if the work does not meet the required standards or does not fulfil the assessment criteria set by the IB. It is important to carefully follow the guidelines, seek guidance from your supervisor, and ensure your essay demonstrates strong research, analysis, and critical thinking skills. In 2022, 1.1% of students did not received no grade for their Extended Essays.

Can you fail the Extended Essay and still pass the IB?

Yes, it is possible to fail the Extended Essay and still pass the overall IB Diploma Programme. The Extended Essay contributes to a maximum of 3 points out of the total 45 points available for the diploma. Failing the Extended Essay means not earning any points from this component, but it does not necessarily mean failing the entire IB Diploma.

Can you collaborate with other students on the Extended Essay?

The IB allows limited collaboration with other students on the Extended Essay. While you can seek advice and support from others, it is important to maintain individual responsibility for your research, writing, and analysis. Collaboration should not compromise the integrity of your work, and any collaborative effort should be properly acknowledged and cited in your essay.

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How to Choose an IB Extended Essay Topic

What’s covered:, what is the ib extended essay, what makes a good extended essay topic, narrowing down your focus, how is the extended essay scored.

• How Does The Extended Essay Affect My Admissions Chances?

The International Baccalaureate Program (IB) curriculum requires students to go above and beyond typical academic standards for most high school students. One of the required tasks is writing the extended essay. To further understand the extended essay, we need to understand what IB’s core is, which is related to the 45 points one can achieve in IB . Out of 45 points, three of these points come from the core, which is made up of the extended essay (EE), theory of knowledge, and CAS. Performing well in the EE is critical to doing well in IB, because passing the core is a necessary component of earning the diploma. 

The EE is one of the mandatory components of the IB curriculum, and it’s a practical way of preparing students to write undergraduate-level research papers in the form of a 4000 word essay. You would choose which subject to write your EE on in relation to the subject sets you take when in IB, so you have six choices. If you were to ideally timeline the extended essay and plan all the work out early, you’d start planning a topic the first semester of your junior year (or IB year 1).

Starting early to pick a topic is an advantage many students miss, because the phase of the EE in which most students get stuck on is just finalizing a solid topic to write about. While picking a topic shouldn’t be too stressful, it is important to pick one you could enjoy writing about, as lack of interest is apparent in an essay and will come across to your examiner. 

Searching for ideas to create a topic can come from different sources, but for most people it usually begins with the subjects you’re already taking. For example, let’s say you chose to write an EE in Physics HL or SL, then it does not matter too much. You’d use the topics discussed in class content, ranging from textbooks to lectures as source material for inspiration to create a topic for yourself. 

Perhaps you found yourself particularly interested in planetary physics – you could then read more into that unit of the course and hopefully find bits of information to help create a topic. 

After finding a source of inspiration for your topic, structuring your ideas in a specific format to create a topic is important. 

On the idea of physics, a great topic would be:

Physics EE on Aerodynamics: What is the relationship between frequency and surface area against lift of the propeller of a toy helicopter?

The reason this topic is great is because we can instantly tell how specified and narrowed down the central focus of the paper is just off a glance. Narrowing down your focus in your topic allows you, as the writer, to stay on track throughout the entirety of the paper. Derailing from your topic and going out of its bounds can lead to irrelevant information, making the content of your paper essentially useless. Keep your topic narrow and make sure to follow the topic throughout the entire paper, so you end up with a concise paper that actually can conclude with a solution to whatever your paper seeks to solve. 

Additionally, using keywords in your topic that give the examiner an idea of what they’re going to read is important. In this case, the writer used “frequency” and “surface area,” telling us they’re writing a paper related to mechanics as well. 

Understanding that the topic is the skeleton of your essay, make sure to refer back to it every time you make a finding or reveal data directly relevant to answering the topic’s question. Using data and evidence that isn’t relevant to your narrowed down topic will also cause you to lose points, simply because of the lack of use for it. 

The EE is scored out of 34 total points, with grade boundaries being assigned to associated letter grades with it. The following table lists the grade boundaries with their respective letter grades:

As mentioned earlier, the EE is part of a larger component of the IB curriculum, the core of IB. The core has its own grading scheme that also determines whether or not you pass and earn the diploma. It goes by the following table:

How Does the Extended Essay Affect My Admissions Chances?

While the EE has no direct impact on your college admissions, it does impact your total IB grade. However, even though your IB grade has little impact on your college admissions, being part of IB demonstrates proof of taking rigorous classes, which will positively impact your college admissions. 

That being said, writing the EE will also make you a much better essay writer, and this could later help you in writing essays for college admissions! For more information on how your chances of college admissions look, use CollegeVine’s admissions calculator ! This tool takes into account GPA, test scores, classes, and more to calculate your admissions chances at your dream schools!

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Guide to the IB Extended Essay in 2024

January 24, 2024

If you’re an International Baccalaureate student getting ready to write your IB Extended Essay, you might be experiencing some very understandable trepidation. But have no fear—we’re here to help you understand what’s required of you, how to plan ahead (IB extended essay topics), and how you’ll be graded (IB extended essay rubric). Keep reading for a good dose of preparation and confidence before you begin the journey. In this article, we’ll cover:

What is the IB Extended Essay?

The ib extended essay—required content, ib extended essay topics.

IB Extended Essay—Sample Essays

IB Extended Essay Tips

Ib extended essay rubric, ib extended essay—more resources.

The IB Extended Essay is a 4,000-word paper that asks you to immerse yourself in research and academic writing. A required part of the IB program, the Extended Essay is a chance to dig deep into a topic that fascinates you.

Although it’s no small task, the IB Extended Essay is an opportunity to gain practical research and writing skills that will come in handy again in college. As you write, you’ll learn how to:

• Identify credible sources
• Formulate a research question and limit your scope of research
• Communicate ideas to an audience
• Develop a well-supported argument

The IB Extended Essay is largely an independent, self-directed project, but don’t worry—the IB program doesn’t throw you into the deep end. You do get to select a mentor (usually a teacher at your school) to help guide you through the process. As you write, you’ll be required to meet with your mentor three times. As part of your final evaluation, your mentor will interview you in a final reflection section called a viva voce . During the viva voce, your mentor will check for plagiarism and malpractice, ask you to reflect on challenges and difficulties, and prompt you to discuss what you’ve learned through the research and writing process. Your mentor will then generate a report that factors into your final grade.

Your final essay must include the following:

• Contents page
• Introduction
• Body of the essay
• References and bibliography

For this essay, it will be up to you to generate a topic; the International Baccalaureate does not provide prompts. However, your essay will need to fit within one of six provided subject areas . You’ll choose from the following list of IB Extended Essay Topics:

• Language and literature
• Language acquisition
• Individuals and societies
• Mathematics

IB Extended Essay Topics (Continued)

At a glance, the subject areas might look limited, but the topics you can choose to write about are actually wide-ranging. The “Individuals and societies” category includes social science topics like economics, history, world religions, and philosophy. And, if you’re leaning toward “Science,” you can choose from classic subjects such as biology, chemistry, and physics, or related topics like environmental systems or health science, among others.

The IB also offers a special “World Studies” option for students interested in researching global issues. This subject would allow you to center your writing on global issues such as migration, global health, cultural exchange, or climate change.

Wondering what an outstanding IB Extended Essay looks like? The International Baccalaureate provides quite a few sample student essays online . Here are five essays that earned A grades.

Language and literature: An exploration of an aspect of the narrative voice in Vladimir Nabokov’s Lolita

Environmental Systems and Societies: The economic impact of the 1995 reintroduction of grey wolves to Yellowstone National Park

Psychology: To what extent do social networking sites (SNS) usage lead to experience of anxiety in adolescents?

Music: Composition techniques in the 1st movement of Johannes Brahms’s Symphony No. 2, Op. 73

Business Management: Corporate Culture at Oracle

1) Pick something you’re passionate about

As you can see from the titles above, the IB Extended Essay is a great place to delve into a niche topic that fascinates you. Since you’ll be spending many months on this essay, you’ll want to pick a topic you genuinely enjoy spending time learning about. It’s also smart to choose something you’ve already learned about in your IB classes so that you have a strong foundation of knowledge to start with. In music class, do you love pondering why music makes us feel a certain way? Maybe an essay about music theory will keep your gears turning. Do you come alive trying to solve seemingly impossible problems in physics class? Now’s your chance to put those equations into action.

Since this essay is all about your academic interests, it’s also a good idea to pick a topic that’s relevant to what you plan to study in college. Selecting a relevant topic will provide you with significant exposure to the field and will also give you something meaningful to talk about in your college admissions essays.

2) Limit your scope

What’s the meaning of life? Why do wars happen? What is time? Some questions are just way too big to answer, and your IB Extended Essay is not a good place to tackle expansive, philosophical questions. Instead, think of this essay as a place to investigate one piece of a big question. If, let’s say, you’re generally interested in what helps women reach positions of leadership in business, this is a good place to examine how one or a few companies approach this issue. Or, if you’re interested in studying what inspires surrealist painters, you’ll want to pick one or a few painters to research, likely all from the same time period. For both these topics, you’d need a whole textbook to tackle the full question, but limiting your scope will make it much easier to write a clear and cohesive 4,000 words.

On the other hand, it’s possible to narrow your focus too much. It would be impossible, for example, to write 4,000 words about a single sentence in a novel. Make sure you talk about scope early and often with your mentor. Together, you can find the perfect Goldilocks scope for your project that’s not too big and not too small.

3) Choose a good mentor

Speaking of mentors, choosing wisely will help you enormously as you embark on your IB Extended Essay. You’ll want to make sure you choose someone with existing knowledge in your research topic. Your English teacher may be able to give you great writing advice, for example, but they won’t be able to guide your research and scope if you’re writing about marine animals or modern dance.

Before you approach a teacher, make sure you have at least one topic idea (or even a few ideas) in mind so that you can make sure they’ll be a good fit to supervise your project. When you meet with them, find out what their mentorship style is like. Make sure they’ll have time to read several drafts of your essays, meet with you a few times, and give you feedback. Some IB schools will require your IB Extended Essay mentor to sign an agreement form too, so make sure you find out what paperwork is required in advance.

4) Get organized, way organized

The IB Extended Essay is not something you can crank out the night before it’s due. The essay is meant to be a substantive, in-depth, thoughtful, and thoroughly researched analysis, and Rome simply isn’t built in a day. This might be the longest paper you’ve written to date, and this project might require more research than you’ve been asked to do before. Timelines vary by school, but you’ll likely spend between eight months and a year working on your IB Extended Essay. So, how will you pull it all off? For these 8-12 months, organization will be your guiding light. We recommend you:

• Get started early. If your essay is due November of your senior year, start generating topic ideas during your junior year right after winter break.
• Create a long-view schedule for yourself. What will you accomplish each month of your process?
• Give yourself deadlines. Once you choose a mentor, suggest 2-3 draft deadline dates so that you will be held accountable throughout the writing process.
• Find a note-taking system that works for you. You’ll be reading many articles and books and it’s hard to keep track of all your sources. Create a document or spreadsheet where you keep track of the sources you’ve found and check them off as you read. As you finish reading a text, type up important quotes and a few notes explaining how it connects to your topic and to your other texts.

5)Write a messy first draft

Writing never comes out perfect the first time, even for New York Times bestselling authors and the most experienced researchers. In your first draft, give yourself permission to get all your thoughts out, no matter how unstructured or rambling they are. Call this your brainstorming draft. When you’re ready to revisit it, see what patterns emerge, what common ideas you can group together, what beginning buds of ideas you can make bloom into full-fledged analysis.

6) Communicate for an audience

When you’re used to producing writing that only your teacher reads, it can be hard to remember to write for an audience. But at the end of the day, writing is communication , and the best writing is clear and thorough communication that anyone could pick up and read. For your IB Extended Essay, you’ll want to remember that many people will be reading your final essay, and not all of them will be experts in the niche topic you choose to study. Ask yourself: how can I explain my research to an audience who doesn’t already agree with my analysis?

To communicate to an audience, you’ll want to:

• Provide lots of general background information on your topic.
• Don’t assume your reader is familiar with your sources. Introduce them as if they’re guest speakers about to walk up to a podium and deliver a lecture.
• After including quotes, facts, and figures, be sure to explain what those sources mean in your own words and how they connect to your bigger-picture argument.
• Don’t assume your arguments are self-evident. In this essay, communicating for an audience means supplying ongoing interpretation and analysis, even if it feels like you’re explaining the obvious. Your reader isn’t on your research journey with you, so your points might not be so obvious to your reader.

Although your IB Extended Essay provides a report that factors into your grade, your essay will also be assessed by external examiners the IB. Per the IB Extended Essay Rubric , essays are graded on a scale from 0 to 34 based on 5 different criteria:

• Criterion A: Focus and Method (6 points maximum)
• Criterion B: Knowledge and Understanding (6 points maximum)
• Criterion C: Critical Thinking (12 points maximum)
• Criterion D: Presentation (4 points maximum)
• Criterion E: Engagement (6 points maximum)

As you can see, Critical Thinking is the most significant rubric category. This means that the IB wants to see you arrive at your own unique analysis of your topic, drawing connections between sources and data, and making well-supported arguments. This means they want a lot of you: your ideas, your interpretations, your thoughts. Make sure you emphasize that in your essay, but of course don’t forget the other categories.

The score a student receives corresponds to a letter grade scale that is slightly different than what we’re accustomed to in the U.S. Here’s the letter grade to numerical score breakdown:

You must earn a D or higher to receive your IB Diploma. To learn more about the different criteria included in the IB Extended Essay Rubric, you can explore the IB’s full guide to the Extended Essay .

We hope you found our look at the IB extended essay rubric and IB extended essay topics to be helpful. Ready to dive into research? You may want to read our 10 Expert Tips for Improving Reading Comprehension before you hit the books.

And if you’re a high school student in the process of mapping out your pathway to college, take a look at a few other useful guides:

• IB vs AP—Which Classes are Best for College Admission?
• How to Earn College Credit in High School
• High School Course Requirements for College Admission
• SAT Score Calculator
• ACT Score Calculator 
• High School Success

Christina Wood

Christina Wood holds a BA in Literature & Writing from UC San Diego, an MFA in Creative Writing from Washington University in St. Louis, and is currently a Doctoral Candidate in English at the University of Georgia, where she teaches creative writing and first-year composition courses. Christina has published fiction and nonfiction in numerous publications, including The Paris Review , McSweeney’s , Granta , Virginia Quarterly Review , The Sewanee Review , Mississippi Review , and Puerto del Sol , among others. Her story “The Astronaut” won the 2018 Shirley Jackson Award for short fiction and received a “Distinguished Stories” mention in the 2019 Best American Short Stories anthology.

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​Researching and writing an IB Extended Essay in Biology

Mr James Fraser, Head of Science at  Scarborough College , shares some of the Extended Essay topics that he's had the pleasure of supervising.

The Extended Essay is a compulsory component of the IB Diploma. Students are tasked with writing four thousand words on a topic of their choice relating to one of the subjects they are studying for their Diploma. Every student is allocated a supervisor who will guide them through the process. It is not an exaggeration when I say that supervising students completing their Extended Essay in my subject has been the most rewarding part of my teaching role at the College.

I have had the privilege of supervising more than thirty students since the IB was introduced at the College more than ten years ago. When I cast my mind back, some topics and essays immediately spring to mind. For instance, the research undertaken by a student to investigate the response made by the tiny C. elegans worm to being tapped on the head. After we had acquired the worms from the University of Chicago, the student designed an ingenious device to tap the head of the worms using her own eyelash. I am sure the experience of conducting research for her Extended Essay in the College laboratory was an instrumental reason for her choosing to read for an immunology degree at the University of Glasgow before doing a PhD at Melbourne University.

More recently, a student now studying medicine at university, designed an investigation to genetically modify bacteria cultured in the lab with a gene originally obtained from jellyfish. The gene taken up by the transgenic bacteria caused them to fluoresce when exposed to ultraviolet light. The gene was prepared in a number of different ways to see if this had an effect on its uptake by the bacteria.

Our current Upper Sixth students have recently submitted their Extended Essays. A variety of topics were chosen for investigation by biologists this time around including the effect of hair washing on the strength of hair and the frequency of visits to a bird feeder by House sparrows during the day.

Another essay written by Ksenia Ivanova focussed on the potential for the effect of an antibiotic to be enhanced when used in conjunction with a variety of different plant extracts. I asked Ksenia what advice she would give a student choosing a topic for their essay. She replied that 'Whichever topic you decide to explore, the key is to choose something that you really like and care about, so that your work would never be boring.'

The essays themselves are awarded a grade from A to E. Together with the grade for the Theory of Knowledge course, upto three additional IB Diploma points can be included in their overall IB Diploma score. However, the emphasis throughout the process is not solely on the outcome. Many former students have been in touch over the years to tell me how much their Extended Essay experience helped them when completing assignments and dissertations at university. They always comment on the head start they had over their peers who had studied for ‘A’ Levels who had no experience of academic writing at school.

Returning to my current students, they have discovered that the frequency of hair washing does NOT have an effect on its strength, House sparrows visit garden feeders more in the morning and early evening than at other times of day, and are much more likely to be male than female, and the growth of bacteria was inhibited more when an antibiotic was used together with either clove oil or clary sage extracts than when it was used on its own.

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Biology EE Topics: How to Choose, Plus Good Examples

by  Antony W

September 3, 2022

Have you scoured the web for Biology EE topics but came out empty? Or maybe you’ve considered writing an EE in the subject but you still have no idea what to focus your research on?

You’ve come to the right place.

In this guide, you’ll learn how to choose the best biology extended essay topic to explore in your assignment. In addition, we’ll give you some topic ideas as well as teach you how to treat the topic you choose.  

What’s the Purpose of a Biology Extended Essay? 

An extended essay in biology allows you to apply biological knowledge while conducting research on a topic of personal interest within the area of biology.

A concentration on biology within the framework of a broader scientific research is what defines the nature of a biology extended essay.

How to Choose Biology EE Topics

The following are important considerations to make when selecting a topic for your biology extended essay:

1. Select a Topic Focusing Strictly on Biology

Biology is the scientific discipline concerned with living beings and biological processes. Therefore, a biology extended essay should contain biological theory and underline the subject's fundamental character.

It is essential that the emphasis of the extended essay be clearly biological and not more closely connected to another subject.

Although identical grading criteria apply to all extended essays in the experimental sciences, the topic you choose for a biology extended essay must provide a distinct biological perspective.

2. Avoid Topics That May Cause Harm

Certain topics are inappropriate for research due to ethical concerns. Investigations based on trials that are likely to cause pain or needless stress to living beings are ineligible for submission.

Investigations that are likely to have a negative impact on health, such as microorganism cultivation at or near body temperature, or that may require access to or release of personal medical information are inappropriate.

Some topics may not be acceptable for examination due to safety concerns.

You need to avoid experiments involving the use of poisonous or hazardous chemicals, carcinogenic compounds, or radioactive materials, unless proper safety equipment and trained supervision are available.

3. Avoid Obvious Topics

Other topics may be inappropriate because the conclusion is already well known and documented in standard textbooks.

Biology Extended Essay Writing Help

Are you finding Biology Extended Essay topic selection process tedious? Have you selected a topic but have no idea how to proceed?

Or maybe you have other overwhelming assignments waiting for you and you can’t find the time to complete an EE in this subject?

We’re here to help. 

You can  buy an EE in Biology online   from Help for Assessment and get professional writing help within your time limit Whether you have a week left before submitting your first draft or you’re planning to attend the last reflection meeting to present your final draft, our writers are here to help.

Our writing service involves topic selection, preliminary research, development of a research issue, and writing and editing.

The topic we select is strictly within Biology, and we come up with research issues that we can address within the scope of the Biology Extended Essay assignment. 

10+ Biology Extended Essay Topics

The following are 20+ examples of Biology Extended Essay topics. You can pick a topic from the list, modify it further, and share it with your supervisor for review.

Or you can use this list as an inspiration to help you come up with a topic that would suit your research.  

• Determine the link between the growth hormone indole acetic acid and the growth of X.
• How much do living cultures in dairy products such as milk, yoghurt, and cheese lower the lactose content after 2 hours of incubation?
• The connection between photoreceptor cells in the human retina, “age, and gender."
• Are commercial techniques of oral rinse (mouthwash) more efficient at preventing the growth of Micrococcus luteus than traditional methods of oral hygiene?
• Which of hand sanitizer, hand soap, or antibacterial wipes inhibits the development of E. coli the most effectively?
• Investigating the time necessary for two distinct species of tadpoles to attain metamorphic climax from the pre-metamorphosis stage at four different temperatures
• How much does a 2-hour incubation at 37°C lower the lactose content in yogurts containing live cultures?
• The effect do different light combinations on the movement of red-eared sliders, in relation to the position of the light sources.
• What is the prevalence of nasal carriage of Staphylococcus aureus among kids at Tanglin Trust School, and what are the related risk factors?
• Investigate the antibacterial effects of copper, barium, and silver on bacterial growth.
• Photo acclimation is the capacity of diverse symbiodinium-hosting coral species to endure aberrant light circumstances.
• Is it feasible for plants in the same ecosystem to act differently?
• The risk of painkillers and similar medications to the human brain
• Near hydrothermal vents on the ocean floor are indications of life's development on Earth.
• Current ideas and evidence concerning the molecular reasons responsible for the rising prevalence of allergy disorders in industrialized nations
• Blood group relative frequencies in distinct geographic locations used to trace ancient migrations of humans.
• How millennia of breeding have caused domesticated dogs to respond to eye contact through bonding (by producing oxytocin hormone)
• An examination of malnourished children in Indonesia and the degree of their recovery following a period of supervised increased nutrition.
• The competitive and evolutionary nature of Paramecium Bursaria’s symbiotic connection

Related Reading

• The Complete Guide for Biology Extended Essay
• Learn About Chemistry EE From This Guide
• A List of Mathematics Extended Essay Topics

How to Analyze Your Biology Extended Essay Topic

You should explain early in the essay how you formulated the research topic and, if applicable, how you narrowed it by briefly elaborating on any relevant elements.

You should develop one or more hypotheses, especially since a single, well-formulated inquiry can generate a handful of specific hypotheses.

It’s possible to base your biology extended essays on data obtained through experiments, survey, microscopic observations, biological sketching, fieldwork, or any acceptable biological method.

Alternately, you can base the essay on facts or information collected from literature, ideally from primary sources, then alter or analyze in an innovative way. 

If you’re working on an essay that requires laboratory or fieldwork test, you should provide a clear and brief description of the experimental methodology.

Explain how you chose the research technique and methodology, as well as any options that you investigated but rejected.

Final Thoughts

Now that we’ve given you a list of 10+ Biology extended essay topics, it should be easy for you to identify an area to explore.

It can be an area you’re always interested in or a topic that you’ve always wanted to explore.

You should do research for your essay under the direct supervision of a supervisor.

Regardless of where or under what conditions you conduct studies, you must demonstrate your personal contribution to the research methodology and selection of methodologies in the essay.

Generating and presenting data should not be a goal in and of itself. Remember, proper scientific analysis is vital.

About the author 

Antony W is a professional writer and coach at Help for Assessment. He spends countless hours every day researching and writing great content filled with expert advice on how to write engaging essays, research papers, and assignments.

IBDP Biology

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Updated 2 May 2024

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• Extended Essay titles and research questions
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It is best to help find topics that can be successfully completed by the students themselves. The aim is for students to follow a personal learning pathway. The more they can put their own ideas and skills to the essay process the more internal motivation they will have and the less need there will be for deadlines and pressure from the teacher.Supervisors should try to help the student find the following:

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• Last Updated: Apr 9, 2024 9:39 AM
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